1 The Heart Valve Clinic, Hadassah-Hebrew University Medical Center, Jerusalem, Israel; The Heart Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel. Electronic address: rbeeri@hadassah.org.il.
2 The Heart Institute, Hadassah-Hebrew University Medical Center, Jerusalem, Israel; The Cardio-Thoracic Surgery Department, Hadassah-Hebrew University Medical Center, Jerusalem, Israel.