Lebanese American University School of Medicine, Byblos, Lebanon. Department of Medicine, Tufts Medical Center, Tufts University School of Medicine, Boston, USA. Department of Medicine, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, USA. Cardiovascular Prevention and Research Unit, Department of Pathophysiology, "Laiko" Hospital, Medical School, National & Kapodistrian University of Athens, Athens, Greece. Lebanese American University School of Medicine, Byblos, Lebanon; Division of Nephrology and Transplantation, Department of Medicine, Lebanese American University Medical Center-Rizk Hospital, Beirut, Lebanon. Lebanese American University School of Medicine, Byblos, Lebanon; Division of Nephrology and Transplantation, Department of Medicine, Lebanese American University Medical Center-Rizk Hospital, Beirut, Lebanon. Electronic address: sola.bahous@lau.edu.lb.