- John E. Fogarty International Center (FIC) 20 studies
- National Cancer Institute (NCI) 6020 studies
- National Center for Complementary and Alternative Medicine (NCCAM) 356 studies
- National Center for Research Resources (NCRR) 332 studies
- National Center on Minority Health and Health Disparities (NCMHD) 9 studies
- National Eye Institute (NEI) 255 studies
- National Heart, Lung, and Blood Institute (NHLBI) 1702 studies
- National Human Genome Research Institute (NHGRI) 111 studies
- National Institute for Biomedical Imaging and Bioengineering (NIBIB) 3 studies
- National Institute of Allergy and Infectious Diseases (NIAID) 1557 studies
- National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) 220 studies
- National Institute of Child Health and Human Development (NICHD) 633 studies
- National Institute of Dental and Craniofacial Research (NIDCR) 130 studies
- National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) 631 studies
- National Institute of Environmental Health Sciences (NIEHS) 145 studies
- National Institute of General Medical Sciences (NIGMS) 23 studies
- National Institute of Mental Health (NIMH) 910 studies
- National Institute of Neurological Disorders and Stroke (NINDS) 589 studies
- National Institute of Nursing Research (NINR) 91 studies
- National Institute on Aging (NIA) 224 studies
- National Institute on Alcohol Abuse and Alcoholism (NIAAA) 179 studies
- National Institute on Deafness and Other Communication Disorders (NIDCD) 56 studies
- National Institute on Drug Abuse (NIDA) 745 studies
- National Institutes of Health (NIH) 540 studies
- National Institutes of Health Clinical Center (CC) 136 studies
- National Library of Medicine (NLM) 5 studies
- Office of Dietary Supplements (ODS) 35 studies
- Office of Rare Diseases (ORD) 34 studies
- Office of Research on Women's Health (ORWH) 14 studies
Clinical Trials Authorship and Review
Clinical Trials content is provided directly by the U.S. National Institutes of Health via ClinicalTrials.gov and is not reviewed separately by ClinicalTrialsFeeds.org. Every page of specific clinical trials information contains a unique identifier which can be used to find further details directly from the National Institutes of Health.