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