Select Study Type
All Clinical Trials Epidemiological Studies

Select Disease or Condition of Interest
All Acquired Immunodeficiency Syndrome Acute Respiratory Distress Syndrome Acute Respiratory Failure Agranulocytosis AIDS-related complex Alpha-1 antitrypsin deficiency Anemia Anemia (Cooley's) Anemia (Iron-Loading) Anemia, Aplastic Anemia, Sickle Cell Angina Pectoris Angina, Unstable Aortic aneurysm, abdominal Aortic valve stenosis Arrhythmia Arrhythmogenic Right Ventricular Dysplasia Arterial Occlusive Diseases Arthritis, Rheumatoid Asbestosis Asthma Atherosclerosis Atrial Fibrillation beta-Thalassemia Blood Coagulation Disorders Blood Disease Blood donors Blood Platelets Blood Transfusion Bone Diseases Bone Marrow Transplantation Breast Neoplasms Bronchitis Bronchopulmonary Dysplasia Cardiomyopathy, congestive Cardiomyopathy, hypertrophic Cardiovascular Diseases Carotid Artery Diseases Carotid Stenosis Cerebral Anoxia Cerebral Arteriosclerosis Cerebral Embolism and Thrombosis Cerebrovascular accident Cerebrovascular Disorders Chagas disease Chlamydia infections Chronic Obstructive Pulmonary Disease Coarctation of aorta Colonic Neoplasms Coronary Aneurysm Coronary Arteriosclerosis Coronary Disease Coronary Heart Disease Risk Reduction Cystic Fibrosis Cytomegalovirus Infections Death, Sudden, Cardiac Defect, Congenital Heart Dementia Depression Diabetes Mellitus Diabetes mellitus, insulin-dependent Diabetes Mellitus, non-insulin dependent Diabetic Retinopathy Disease Transmission, Vertical Down syndrome Ductus Arteriosus, Patent Ebstein-Barr virus infections Eclampsia Emphysema Endocardial cushion defects Endometrial Hyperplasia Fanconi Anemia Graft vs Host Disease Heart Arrest Heart Diseases Heart Failure Heart Failure, Congestive Heart septal defects, atrial Heart septal defects, ventricular Helicobacter infections HELLP Syndrome Hematologic Diseases Hematopoietic Stem Cell Transplantation Hemochromatosis Hemoglobinopathies Hemophilia A Hemorrhagic Disorders Hepacivirus Hepatitis B Hepatitis, Viral, Human Herpesviridae infections Herpesvirus, Kaposi Sarcoma-Associated HIV Infections HIV-1 HIV-2 HTLV-I HTLV-II Hyaline Membrane Disease Hypercholesterolemia Hypercholesterolemia, Familial Hyperhomocysteinemia Hyperinsulinism Hyperlipidemia, familial combined Hyperlipoproteinemia Hyperlipoproteinemia type iv Hypertension Hypertension, pulmonary Hypertension, Renovascular Hypertriglyceridemia Hypertrophy, left ventricular Hypobetalipoproteinemia Hypothyroidism Immunization Immunologic Diseases Infection Infection (S. pneumoniae) Inflammation Insulin resistance Iron overload Ischemic attack, transient Kawasaki Disease (KD) Kidney failure, chronic Leukemia Leukemia, Myelocytic, Acute Liver Diseases Long QT syndrome Lung Diseases Lung diseases, interstitial Lung Diseases, Obstructive Lupus erythematosus, systemic Lymphangiomyomatosis Macular Degeneration Menopausal Complaints Menopause Metabolic Syndrome X Mitral Valve Insufficiency Mitral valve stenosis Mucocutaneous Lymph Node Syndrome Multiple Myeloma Mycobacterium tuberculosis Myelodysplastic Syndromes Myocardial Diseases Myocardial Infarction Myocardial Ischemia Myocarditis Neoplasms Neurologic Manifestations Obesity Osteoporosis Pancytopenia Pediatric Heart Disease Peripheral Vascular Diseases Persistent fetal circulation syndrome Pneumoconiosis Pneumocystis carinii infections Pneumonia Polycystic ovary syndrome Postmenopause Pre-Eclampsia Pregnancy Toxemias Pulmonary Embolism Pulmonary Fibrosis Pulmonic stenosis Purpura, thrombocytopenic Raynaud's Disease Renal Artery Obstruction Respiratory Distress Syndrome Retroviridae infections Sarcoidosis Sarcoma, Kaposi Scleroderma, systemic Sedentary Behaviors Severe Combined Immunodeficiency Shock, Cardiogenic Shock, Septic Sick Sinus Syndrome Silicosis Sinus Arrhythmia Sleep Sleep apnea syndromes Sleep initiation and maintenance disorders Syncope Systemic Scleroderma Tachycardia Tachycardia, supraventicular Tachycardia, Ventricular Tangier Disease Telangiectasis Tetralogy of Fallot Thalassemia Thromboembolism Thrombophlebitis Thrombosis Transposition of Great Vessels Tuberculosis Uterine Diseases Vascular Diseases Venous Thromboembolism Venous thrombosis Ventricular Arrhythmia Ventricular Fibrillation West Nile Virus

Select Age Group
All Infant (Less than 1) Child (1-12) Youth (13-17) Young Adult (18-29) Adult (30-64) Older Adult (65 and over)

Select Current Stage of Study
All Pre-Award Planning Pilot Recruitment Suspended Terminated Intervention Follow-up Data Analysis Support Ended Concluded