1 Department of Surgery, Montreal Heart Institute, Montreal, Quebec, Canada.
2 Department of Cardiac Sciences, Libin Cardiovascular Institute, Calgary, Alberta, Canada.
3 Service Médico-Chirurgical: Valvulopathies-Chirurgie Cardiaque-Cardiologie Interventionelle Structurelle, Hôpital Cardiologique de Haut Lévèque, Centre Hospitalier Universitaire Bordeaux, Pessac, France.