Ulkomaiset järjestöt ja yhdistykset
- American College of Cardiology http://www.acc.org/
- American Heart Association http://www.americanheart.org/
- American Society of Nuclear Cardiology http://www.asnc.org/
- European Society of Cardiology http://www.escardio.org/
- Lääkärit ilman rajoja - Medecins sans Frontiers, Doctors without borders http://www.msf.org/
- Heart Rhythm Society (former North American Pacing Society) http://www.hrsonline.org
- WHO - World Health Organisation http://www.who.int/
- World Heart Federation http://www.worldheart.org
