1 Nephrology Division, Saint George Hospital, University Medical Center, Beirut, Lebanon; Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, Saint George University of Beirut, Beirut, Lebanon. Electronic address: n_joubran@hotmail.com.
2 Nephrology Division, Saint George Hospital, University Medical Center, Beirut, Lebanon; Division of Nephrology, Department of Internal Medicine, Faculty of Medicine, University of Balamand, Balamand, Lebanon.