22,363 matching studies

Study is registered in ResearchMatch
Sponsor Condition of Interest
The Impact of Dietary Pattern on Erectile Function
Montefiore Medical Center Erectile Dysfunction
The goal of this study is to determine whether erectile function is impacted by dietary patterns in healthy men with normal erectile function. expand

The goal of this study is to determine whether erectile function is impacted by dietary patterns in healthy men with normal erectile function.

Type: Interventional

Start Date: Oct 2023

open study

Morning Bright Light to Improve Sleep Quality in Veterans
Portland VA Medical Center Brain Injuries, Traumatic Post-traumatic Stress Disorder
One of the principal complicating factors associated with traumatic brain injury (TBI) is sleep-wake disturbances (e.g., insomnia, excessive daytime sleepiness, and circadian rhythm sleep disorders). Morning bright light therapy (MBLT) has been shown to improve sleep quality in a variety of conditi1 expand

One of the principal complicating factors associated with traumatic brain injury (TBI) is sleep-wake disturbances (e.g., insomnia, excessive daytime sleepiness, and circadian rhythm sleep disorders). Morning bright light therapy (MBLT) has been shown to improve sleep quality in a variety of conditions, but little has been done investigating the utility of MBLT in improving sleep in Veterans with TBI. This proposal aims to determine the effect of MBLT on sleep quality in Veterans with TBI. Veterans with and without TBI will be recruited from the VA Portland Health Care System. Baseline questionnaires and 7 days of actigraphy will be collected prior to engaging in 60 minutes of MBLT daily for 4 weeks, during which actigraphy will also be collected continuously. Post-MBLT questionnaire data will be collected, and follow-up questionnaire data will be collected at 3 months post-MBLT.

Type: Interventional

Start Date: Aug 2017

open study

Mobile Supportive Teams for Reinforcing Increased Daily Exercise Study
University of South Carolina Physical Activity
The goal of this research is to examine the addition of a digitally delivered social support training approach to an existing digital program designed to promote a physically active lifestyle among self-selected teams of adults who are not meeting physical activity guidelines. The main aims are to:1 expand

The goal of this research is to examine the addition of a digitally delivered social support training approach to an existing digital program designed to promote a physically active lifestyle among self-selected teams of adults who are not meeting physical activity guidelines. The main aims are to: 1. Determine if the social support training intervention promotes significantly greater changes in moderate-to-vigorous intensity aerobic physical activity (such as a brisk walk) as measured by an accelerometer (research grade physical activity measurement device) at 3 months compared to the same intervention without social support training among self-selected teams of adults who are not meeting the physical activity guidelines. 2. Determine if the social support training intervention promotes significantly greater changes in social support, motivation, accountability, and autonomy social support (free from excessive control and encouraging one's free will) at 3 months and 12 months compared to the same intervention without social support training. 3. Determine if the social support training intervention promotes significantly greater changes in moderate-to-vigorous intensity aerobic physical activity as measured by an accelerometer at 12 months compared to the same intervention without social support training. 4. Explore whether social support mediates increased and sustained moderate-to-vigorous intensity aerobic physical activity among the entire sample of participants.

Type: Interventional

Start Date: Aug 2025

open study

Support Via Technology: Living and Learning With Advancing Dementia-REVISED
Oregon Health and Science University Caregiver Burden
STELLA-R is a multicomponent, self-directed, online intervention designed to facilitate effective management of behavioral and psychological symptoms that are common in many types of dementia. The curriculum instructs care partners to use the ABC approach, a cognitive behavioral technique that teac1 expand

STELLA-R is a multicomponent, self-directed, online intervention designed to facilitate effective management of behavioral and psychological symptoms that are common in many types of dementia. The curriculum instructs care partners to use the ABC approach, a cognitive behavioral technique that teaches care partners to describe a Behavior, then consider the Activators and Consequences of a care recipient behavior. The goal of this intervention is to reduce care partner burden and decrease reactivity to upsetting behaviors.

Type: Interventional

Start Date: Jul 2024

open study

Enhancing Transdiagnostic Mechanisms of Cognitive Dyscontrol (R33)
University of California, San Diego Anxiety Disorders Depression Post Traumatic Stress Disorder
The proposed project aims to test the cognitive and neural effects of a cognitive training in a sample of individuals seeking treatment for anxiety, depression, or traumatic stress symptoms. Participants will be randomly assigned to one of two groups. Group 1 will receive a computer-based program t1 expand

The proposed project aims to test the cognitive and neural effects of a cognitive training in a sample of individuals seeking treatment for anxiety, depression, or traumatic stress symptoms. Participants will be randomly assigned to one of two groups. Group 1 will receive a computer-based program that is designed as a cognitive training intervention and Group 2 will receive a similar computer-based exercise that researchers think will be less effective in training thinking skills (also known as a control or sham condition). Participants will be compared on cognitive performance and brain response during cognitive tasks from baseline to post-treatment.

Type: Interventional

Start Date: Oct 2024

open study

Repetitive Transcranial Magnetic Stimulation for Post-concussion Headaches
State University of New York - Upstate Medical University Brain Concussion Mild Traumatic Brain Injury Headache Post-Concussion Symptoms
This study aims to examine the long-term effect of repetitive transcranial magnetic stimulation (rTMS), a non-invasive brain stimulation technique, on chronic headaches following mild traumatic brain injury (mTBI). rTMS has been shown to be effective in reducing chronic headaches without side effec1 expand

This study aims to examine the long-term effect of repetitive transcranial magnetic stimulation (rTMS), a non-invasive brain stimulation technique, on chronic headaches following mild traumatic brain injury (mTBI). rTMS has been shown to be effective in reducing chronic headaches without side effects commonly seen in medications, such as sleepiness and addiction. This study uses rTMS to manage chronic headaches to improve post-concussion symptoms and reduce the economic burden due to delayed recovery. This project aims to better identify biomarkers for diagnosis and prognosis and maximize recovery from mTBI.

Type: Interventional

Start Date: Oct 2023

open study

Scleroderma Registry & Repository at the Hospital for Special Surgery
Hospital for Special Surgery, New York Scleroderma
The overall objective of the Scleroderma Registry is to support and promote the basic science and clinical research of this complex rheumatic disease at the Hospital for Special Surgery (HSS). The registry facilitates our understanding of the clinical features, pathobiology, genetics of Scleroderma1 expand

The overall objective of the Scleroderma Registry is to support and promote the basic science and clinical research of this complex rheumatic disease at the Hospital for Special Surgery (HSS). The registry facilitates our understanding of the clinical features, pathobiology, genetics of Scleroderma. This will ultimately lead to a potential treatment for this currently untreatable condition.

Type: Observational

Start Date: Aug 2006

open study

Home-Based Cardiac Rehabilitation for Patients With Heart Failure
Vanderbilt University Medical Center Heart Failure With Preserved Ejection Fraction Heart Failure With Reduced Ejection Fraction Cardiovascular Diseases
The vast majority of individuals with heart failure do not participate in center based cardiac rehabilitation (CBCR). While steps to increase utilization of CBCR are important, many individuals will still not participate for a variety of reasons. This pilot randomized controlled trial is evaluating1 expand

The vast majority of individuals with heart failure do not participate in center based cardiac rehabilitation (CBCR). While steps to increase utilization of CBCR are important, many individuals will still not participate for a variety of reasons. This pilot randomized controlled trial is evaluating a home-based cardiac rehabilitation (HBCR) intervention delivered using a custom app and digital tools in patients with heart failure. After a brief roll-in period, participants are randomized to one of two groups: (1) control or (2) HBCR mobile health intervention. The intervention targets key health behaviors and includes traditional cardiac rehabilitation components. The study will assess the effect of the intervention on physical activity, quality of life, clinical events, and other outcomes.

Type: Interventional

Start Date: Aug 2024

open study

A Decentralized Clinical Trial to Promote Evidence-Based Care for Underserved Patients With Neurofi1
Massachusetts General Hospital Neurofibromatosis 1
The goal of this fully decentralized, randomized controlled trial is to compare the efficacy of two educational interventions for individuals with Neurofibromatosis 1 (NF1). The primary objective of the study is to determine which intervention leads to higher rates of evidenced-based health screeni1 expand

The goal of this fully decentralized, randomized controlled trial is to compare the efficacy of two educational interventions for individuals with Neurofibromatosis 1 (NF1). The primary objective of the study is to determine which intervention leads to higher rates of evidenced-based health screenings for NF1 patients in primary care settings. Adults with NF1 and parents/guardians of children with NF1 from across the U.S. who do not go to a specialized NF clinic and who have an upcoming annual wellness visits (e.g. an annual physical, a well-child visit, etc.) scheduled with a primary care provider (PCP) are eligible to enroll in the study. To see if you might be eligible, fill out a prescreening survey here: https://redcap.link/mynfguide

Type: Interventional

Start Date: Dec 2024

open study

Neuromodulation for a Novel OCD Biomarker and Treatment
Boston University Charles River Campus OCD
Although multiple treatments for OCD exist, slow symptom decrease, high remission, and significant side effects for some OCD patients limit their efficacy. More research into the precise neural mechanisms and linked cognitive functions in OCD is also necessary. To address both concerns, this study1 expand

Although multiple treatments for OCD exist, slow symptom decrease, high remission, and significant side effects for some OCD patients limit their efficacy. More research into the precise neural mechanisms and linked cognitive functions in OCD is also necessary. To address both concerns, this study by Dr. Reinhart and his team will test a new, non-invasive, and well-tolerated neuromodulation method for reducing OCD symptoms, based on reward-related rhythms of the orbitofrontal cortex (OFC; a brain region responsible for reward, decision making and other crucial functions that is affected by OCD). This proposal is based on highly encouraging preliminary data in both subsyndromal and treatment-resistant populations that shows rapid reductions in OCD behaviors that last at least 1-3 months. Using high-definition transcranial alternating current stimulation (HD-tACS) guided by EEG brain wave recordings, the study will test whether repetitive modulation of relevant rhythm activity in the OFC can lead to rapid (within five days) and sustainable (up to three months) OCD symptom reduction. This research aims to increase knowledge of OCD and development of effective treatment with minimal side effects.

Type: Interventional

Start Date: Jul 2024

open study

Efficacy of Using Mobile Health Applications for Health
San Diego State University Diabetes Mellitus, Type 2 Obesity
The purpose of this study is to determine the effectiveness of mobile health applications in improving health outcomes and type II diabetes outcomes in type 2 diabetics. This study will involve a 6-month long commitment where participants will be expected to weigh themselves every morning, at the s1 expand

The purpose of this study is to determine the effectiveness of mobile health applications in improving health outcomes and type II diabetes outcomes in type 2 diabetics. This study will involve a 6-month long commitment where participants will be expected to weigh themselves every morning, at the same time, and check their blood glucose readings daily before and after meals for at least three meals in the day.

Type: Interventional

Start Date: Oct 2022

open study

Mild Intermittent Hypoxia: A Prophylactic for Autonomic Dysfunction in Individuals With Spinal Cord1
VA Office of Research and Development Spinal Cord Injuries Autonomic Dysreflexia
The prevalence of autonomic dysfunction and sleep disordered breathing (SDB) is increased in individuals with spinal cord injury (SCI). The loss of autonomic control results in autonomic dysreflexia (AD) and orthostatic hypotension (OH) which explains the increase in cardiovascular related mortalit1 expand

The prevalence of autonomic dysfunction and sleep disordered breathing (SDB) is increased in individuals with spinal cord injury (SCI). The loss of autonomic control results in autonomic dysreflexia (AD) and orthostatic hypotension (OH) which explains the increase in cardiovascular related mortality in these Veterans. There is no effective prophylaxis for autonomic dysfunction. The lack of prophylactic treatment for autonomic dysfunction, and no best clinical practices for SDB in SCI, are significant health concerns for Veterans with SCI. Therefore, the investigators will investigate the effectiveness of mild intermittent hypoxia (MIH) as a prophylactic for autonomic dysfunction in patients with SCI. The investigators propose that MIH targets several mechanisms associated with autonomic control and the co-morbidities associated with SDB. Specifically, exposure to MIH will promote restoration of homeostatic BP control, which would be beneficial to participation in daily activities and independence in those with SCI.

Type: Interventional

Start Date: Oct 2022

open study

Brain Connectivity Patterns in Chronic Temporomandibular Joint Disorders
University of Minnesota Chronic Pain Temporomandibular Joint Disorders Temporomandibular Joint Pain
This study addresses the timely problem of painful temporomandibular disorders (TMD), the most common cause of orofacial pain second only to tooth pain. Findings from previous studies suggest that dysregulation of connectivity within specific brain circuits is part of chronic pain pathophysiology.1 expand

This study addresses the timely problem of painful temporomandibular disorders (TMD), the most common cause of orofacial pain second only to tooth pain. Findings from previous studies suggest that dysregulation of connectivity within specific brain circuits is part of chronic pain pathophysiology. This study will identify connectivity patterns within those brain circuits as potential signatures for pain- related disability in chronic TMD pain participants. New knowledge regarding these brain connectivity patterns is expected to be significant because it will support improved phenotyping of this heterogeneous participant population. It is also expected that this finding can potentially be extrapolated to other chronic pain conditions, such as back pain, migraine headache, and fibromyalgia that are frequently comorbid conditions in chronic TMD participants.

Type: Observational

Start Date: Mar 2022

open study

Anti-Inflammatory Treatment of Uremic Cardiomyopathy With Colchicine
Brigham and Women's Hospital Chronic Kidney Diseases
This study is designed to determine the efficacy and safety of colchicine in patients with chronic kidney disease. expand

This study is designed to determine the efficacy and safety of colchicine in patients with chronic kidney disease.

Type: Interventional

Start Date: Nov 2021

open study

Transcranial Direct Current Stimulation (tDCS) Neuromodulation of Executive Function Across Neurops1
Massachusetts General Hospital Traumatic Brain Injury Major Depressive Disorder Bipolar Disorder Schizophrenia Attention Deficit Hyperactivity Disorder
In the current study, the investigators aim to understand the role of transcranial direct current stimulation (tDCS) in improving executive function across neuropsychiatric populations known to have deficits in this cognitive domain. expand

In the current study, the investigators aim to understand the role of transcranial direct current stimulation (tDCS) in improving executive function across neuropsychiatric populations known to have deficits in this cognitive domain.

Type: Interventional

Start Date: Sep 2014

open study

Social Facilitation of Alcohol Effects and Alcohol Misuse in Young Adults
University of Southern California Alcohol Consumption Alcohol Abuse/Dependence
The purpose of this study is to understand social contexts and alcohol use. We hope to learn how being around peers affects alcohol consumption in young adults. About 200 young adults who drink alcohol frequently will take part in the study. This research is being funded by the National Institute o1 expand

The purpose of this study is to understand social contexts and alcohol use. We hope to learn how being around peers affects alcohol consumption in young adults. About 200 young adults who drink alcohol frequently will take part in the study. This research is being funded by the National Institute on Alcohol Abuse and Alcoholism (NIAAA). Participation involves one in-person screening session with a same-sex platonic friend. Then participants will complete four in-person laboratory sessions where they will drink beverages containing alcohol or no alcohol. After completion of the laboratory sessions, participants will complete smartphone surveys for 28 days. Lastly, they will complete follow-up surveys 6 months and 12 months post-study enrollment.

Type: Interventional

Start Date: Feb 2025

open study

NEUROBALANCE Training to Improve Postural Control in Individuals With Traumatic Brain Injury
Kessler Foundation Traumatic Brain Injury TBI Diffuse Axonal Brain Injury Brain Injuries, Traumatic
Our proposed study, "NEUROBALANCE," aims to evaluate the effectiveness of a combined intervention involving robotic balance training and noninvasive brain stimulation in improving balance functions in individuals with chronic traumatic brain injury (TBI). The study will recruit 45 participa1 expand

Our proposed study, "NEUROBALANCE," aims to evaluate the effectiveness of a combined intervention involving robotic balance training and noninvasive brain stimulation in improving balance functions in individuals with chronic traumatic brain injury (TBI). The study will recruit 45 participants who have had a TBI for over six months and experience persistent balance deficits. Participants will be randomized into three groups: (1) robotic balance training with active brain stimulation, (2) robotic balance training with sham brain stimulation, and (3) standard-of-care rehabilitation. The study will involve 12 training sessions over four weeks, with assessments conducted at baseline, post-training, and two months post-training to evaluate balance recovery and retention. The primary focus is understanding how this intervention affects brain and muscle activity during balance tasks and how these changes translate into functional improvements in clinical outcome measures of balance function. Additionally, participant feedback on brain stimulation and exercise engagement will be collected to inform future studies. This research is particularly relevant to military service members, as TBI and balance impairments are common among this population. The findings may guide the development of personalized training protocols and contribute to broader rehabilitation strategies.

Type: Interventional

Start Date: Aug 2025

open study

Neuroscience-informed Treatment to Remotely Target Reward Mechanisms in Post-acute Anorexia Nervosa
Virginia Commonwealth University Anorexia Nervosa
The investigators will recruit individuals with broadly-defined AN (n = 80) who are currently in or have recently participated in higher-level eating disorder treatment (e.g., residential, partial hospitalization/day treatment, intensive outpatient treatment). Interested participants will sign cons1 expand

The investigators will recruit individuals with broadly-defined AN (n = 80) who are currently in or have recently participated in higher-level eating disorder treatment (e.g., residential, partial hospitalization/day treatment, intensive outpatient treatment). Interested participants will sign consent, complete eligibility assessments, and will be randomized to receive Positive Affect Treatment for Anorexia Nervosa (PAT-AN) or Psychoeducation and Behavioral Therapy (PBT) through teletherapy shortly following discharge from higher level of care. Participants can participate in most other forms of outpatient treatment while receiving the research intervention. Participants will engage in 24 weeks of PAT-AN or PBT starting in the first 3 months post-discharge. At each session, the investigators will complete brief measures assessing treatment acceptability, affect, and eating disorder symptoms. Participants will also complete an assessment battery of self-report, EMA, and neurocognitive measures evaluating primary outcomes (BMI; eating disorder symptoms), secondary outcomes (depression, anxiety, and suicidality), and presumed treatment mechanisms at baseline, end of treatment (EOT), and 3-month follow-up (FU). All assessments will be remotely delivered via HIPAA-compliant platforms.

Type: Interventional

Start Date: Dec 2023

open study

Respiratory Training in the Treatment of Transdiagnostic Pathological Anxiety
University of Texas at Austin Anxiety Disorders Trauma Generalized Anxiety Disorder Panic Disorder Agoraphobia
Purpose of the Research: The primary aim of the proposed study is to conduct a randomized parallel-group 2-arm clinical trial investigating capnometry-guided respiratory intervention (CGRI) for pathological anxiety. CGRI aims to raise end-tidal CO2 levels thereby lowering hyperventilation-induced r1 expand

Purpose of the Research: The primary aim of the proposed study is to conduct a randomized parallel-group 2-arm clinical trial investigating capnometry-guided respiratory intervention (CGRI) for pathological anxiety. CGRI aims to raise end-tidal CO2 levels thereby lowering hyperventilation-induced respiratory alkalosis and its associated fear-eliciting somatic reactions. Psycho-education about anxiety and its effects (PsyEd) will serve as a credible control comparator.

Type: Interventional

Start Date: Aug 2022

open study

Duloxetine Metabolism and Fibromyalgia
University of Utah Fibromyalgia Duloxetine
People with fibromyalgia report generalized body pain ("pain all over"), increased sensitivity to painful stimulation, chronic tiredness or low energy, sleep problems, and other physical and functional problems. The exact cause of the disorder is poorly understood, and treatment can be difficult.1 expand

People with fibromyalgia report generalized body pain ("pain all over"), increased sensitivity to painful stimulation, chronic tiredness or low energy, sleep problems, and other physical and functional problems. The exact cause of the disorder is poorly understood, and treatment can be difficult. The degree to which duloxetine is helpful for people with fibromyalgia varies greatly. For some people, it is very helpful for managing fibromyalgia symptoms. For others, people may not notice any benefit. Yet for some, it is a little helpful and the effect is noticeable only when people forget to take the medicine. The purpose of this study is to collect data to better understand the relationship among gene types that control those enzymes, blood concentrations of duloxetine, and how it helps the symptoms.

Type: Observational [Patient Registry]

Start Date: May 2025

open study

Cocoa Extract for Migraine Trial
Brigham and Women's Hospital Migraine
The goal of this clinical trial is to assess the feasibility of recruitment and adherence to a high-dose cocoa extract supplement in individuals diagnosed with episodic migraine. The main questions it aims to answer are: - Will we be able to enroll 114 participants during the recruitment period1 expand

The goal of this clinical trial is to assess the feasibility of recruitment and adherence to a high-dose cocoa extract supplement in individuals diagnosed with episodic migraine. The main questions it aims to answer are: - Will we be able to enroll 114 participants during the recruitment period? - Will participants take study pills daily during the pill-taking period? Researchers will compare two doses of cocoa extract to placebo to determine the acceptability of higher doses of cocoa extract supplementation in this patient population. Participants will be asked to: - Provide two urine samples - Complete daily questionnaires - Take four study pills a day for 12 weeks

Type: Interventional

Start Date: Jun 2025

open study

Internet-delivered Cognitive-Behavioral Therapy for Adolescents With Autism and Anxiety
Baylor College of Medicine Autism Spectrum Disorder Autism Anxiety Anxiety Disorders Generalized Anxiety Disorder
Anxiety is very common in autistic youth. Cognitive behavioral therapy (CBT) is the recommended treatment for both autistic and typically-developing (TD) youth with anxiety, yet most families cannot access CBT due to cost, practicalities of attending in-person treatment sessions, and a shortage of1 expand

Anxiety is very common in autistic youth. Cognitive behavioral therapy (CBT) is the recommended treatment for both autistic and typically-developing (TD) youth with anxiety, yet most families cannot access CBT due to cost, practicalities of attending in-person treatment sessions, and a shortage of trained providers, especially in rural areas. The goal of this project is to increase access to care for families of autistic adolescents with anxiety through an internet-based treatment model.

Type: Interventional

Start Date: Nov 2024

open study

Sleep Restriction and Parental History of Hypertension
Mayo Clinic Hypertension
The purpose of this study is to research the effects of partial sleep deprivation (sleep restriction) in a group of individuals whose parents have high blood pressure compared to a group of individuals whose parents have normal blood pressure. expand

The purpose of this study is to research the effects of partial sleep deprivation (sleep restriction) in a group of individuals whose parents have high blood pressure compared to a group of individuals whose parents have normal blood pressure.

Type: Interventional

Start Date: Feb 2025

open study

A Study of RSLV-132 in Females With Sjögren's Disease
Resolve Therapeutics Primary Sjögren Syndrome
The goal of this clinical study is to learn if RSLV-132 improves the symptoms of SS in adults. It will also learn about the safety of RSLV-132. The main questions it aims to answer are: - Does RSLV-132 improve the cardinal symptoms of Sjogren's including fatigue, dryness and pain? - Do1 expand

The goal of this clinical study is to learn if RSLV-132 improves the symptoms of SS in adults. It will also learn about the safety of RSLV-132. The main questions it aims to answer are: - Does RSLV-132 improve the cardinal symptoms of Sjogren's including fatigue, dryness and pain? - Does RSLV-132 improve the tiredness/fatigue caused by Sjogren's? - What are the blood levels of RSLV-132 over time? - What is the immune (antibody) response in the body to RSLV-132? - What is the safety profile of RSLV-132? Researchers will compare RSLV-132 to a placebo (a look-alike substance that contains no drug) to see if RSLV-132 improves the symptoms of pSS. Participants will: Take RSLV-132 or a placebo 13 times over 22 weeks Visit the clinic once every week for the first 2 weeks, then every 2 weeks until the end of treatment and then for a final time 4 weeks later (Day 211) for check-ups, tests and to answer questionnaires about their symptoms Record their symptoms every day on an electronic device

Type: Interventional

Start Date: Dec 2024

open study

The Healthy Families Bright Futures Program
University of Colorado, Colorado Springs Alcohol Drinking Violence in Adolescence
The goal of this clinical trial is to learn about an online group program (Healthy Families Bright Futures program) for LGBTQ+ teens and their caregivers. The main question[s] it aims to answer are: • is this program acceptable, appropriate, and feasible for LGBTQ+ youth and their caregivers • does1 expand

The goal of this clinical trial is to learn about an online group program (Healthy Families Bright Futures program) for LGBTQ+ teens and their caregivers. The main question[s] it aims to answer are: • is this program acceptable, appropriate, and feasible for LGBTQ+ youth and their caregivers • does the program affect teen (alcohol use, dating violence, alcohol use refusal self-efficacy, healthy communication self-efficacy) and caregiver (accepting behaviors, parenting self-efficacy, parenting behaviors) outcomes associated with risk for dating violence and alcohol use among LGBTQ+ teens. Participants will participate in a one-hour weekly online group for seven weeks with separate groups for teens and caregivers.

Type: Interventional

Start Date: Jan 2025

open study