World Health Organization
http://www.who.int/

American Heart Association
http://www.americanheart.org

International Cardioncology Society
http://www.cardioncology.com

CPX International
http://www.cpxinternational.com/

Texas Heart Institut
http://www.tmc.edu/thi/
The City University of New York
http://www.cuny.edu
USA Today Health
http://www.usatoday.com/news/health/healthindex.htm
The Franklin Institute Science Museum
http://sln.fi.edu/biosci/heart.html
Heart Information Network
http://www.heartinfo.com
HeartPoint Homepage
http://www.heartpoint.com
Gateway to Health Information
http://www.healthgate.com
Department of Pediatrics-Cardiology, Baylor College of Medecine, Texas Children's Hospital
http://www.bcm.tmc.edu/pedi/cardio/
The Sudden Arrhythmia Death Syndromes Foundation
http://www.sads.org
National Marfan Foundation
http://www.marfan.org
Minnesota Department of Health
http://www.health.state.mn.us/
Healthfinder
http://www.healthfinder.gov
National Library of Medecine
http://www.nlm.nih.gov/nlmhome.html
The National Heart, Lung and Blood Institute
http://www.nhlbi.nih.gov
The National Women's Health Information Center
http://www.4woman.gov
Center for Disease Control and Prevention
http://www.cdc.gov
National Institutes of Health (NIH)
http://www.nih.gov
Buffalo Cardiology and Pulmonary Associates, PC
http://www.bcpa.com
Heart Care International
http://www.heartcareintl.org
The Heart Institute for Children
http://www.thic.com
International Society for Minimally Invasive Cardiac Surgery
http://www.ismics.org
The Michigan Society of Echocardiography
http://www.msecho.org
World health Orgnization Europe
http://www.who.dk/
Le site Internet sur la Douleur
http://www.sante.gouv.fr
Il sito Internet inglese dedicato ai Paramedici
http://nmap.ac.uk
European Health Management Association
http://www.ehma.org