American College of Cardiologists
American Heart Association
National Lipid Association
Committee on Cardiovascular and metabolic diseases
Medline plus Homepage
Diabetes association
American society of Hypertension
WebMD: Hypertension:

National Heart, Lung, and Blood institute (NHLBI)

NHLBI: Sleep apnea
NHLBI: Diseases and Conditions Index
Nutrition Source: Harvard School of Public Health
Metabolism Calculator - WebMD
Atrial Fibrillation - St. Jude Medical
The Heart Center Online
Smart Heart Living
Cardiosmart
Heart Health Online Magazine
Heart Site