1 Division of Cardiology, Hadassah Medical Center, Faculty of Medicine, Hebrew University of Jerusalem, Israel, Clalit Heart Failure Services, Clalit Health Services, Jerusalem, Israel.
2 Division of Cardiovascular Medicine and Surgery, Tzafon Medical Center, Lower Galilee, Israel, Azrieli Faculty of Medicine, Bar-Ilan University, Safed, Israel.
3 Division of Cardiology, Rabin Medical Center (Beilinson Campus), Petah Tikva, Israel, Tel Aviv University Medical School, Tel Aviv, Israel.
4 Leviev Heart Center, Sheba Medical Center, Tel Hashomer, Israel, Tel Aviv University Medical School, Tel Aviv, Israel.