1. Departments of Cardiology, Heart Valve Clinic, University of Liège Hospital, GIGA Institute, CHU Sart Tilman , Domaine Universitaire du Sart Tilman—B.35, 4000 Liège , Belgium
2. National Heart Research Institute Singapore, National Heart Centre Singapore , Singapore
3. Marcus Heart Valve Center, Piedmont Heart Institute , Atlanta, GA 30309 , USA