sentences:  He chaired the Department of Internal Medicine at the American University of Beirut (AUB) from July 2000 until December 2006, when he was named Founding Dean of the new medical school at Lebanese American University.In 2010, he returned to AUB as Professor of Medicine, Associate Dean for Medical Education, and Director of the Vascular Medicine Program.He was elected to the American Society for Clinical Investigation in 1991, the Association of American Physicians in 2001, the Lebanese Academy of Sciences in 2009, and the Royal College of Physicians, London in 2019.