Heart Valve Diseases

• The Hospital for Sick Children — Toronto, Ontario, Canada
• Rigshospitalet Copenhagen — Copenhagen, Denmark
• Deutsches Herzzentrum Berlin — Berlin, Germany
• Deutsches Herzzentrum München — München, Germany

• University Hospital - London Health Sciences Centre — London, Ontario, Canada

• Hjerte-lunge-karkirurgisk afdeling T, Skejby Sygehus — Aarhus N, Denmark

• Vienna General Hospital — Vienna, State of Vienna, Austria

• Seyyed-al-Shohada Heart Center — Urmia, West Azerbaijan Province, Iran

• Konkuk University Medical Center — Seoul, South Korea

Not specified

• Siriraj Hospital Mahidol University — Bangkok, Thailand

• State Research Institute of Circulation Patholody — Novosibirsk, Russia

• Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute — Seoul, South Korea