Fadi H Mourad1, Jana G Hashash2. 1. Division of Gastroenterology and Hepatology, American University of Beirut, Beirut 110-32090, Lebanon. Electronic address: fmourad@aub.edu.lb. 2. Division of Gastroenterology and Hepatology, American University of Beirut, Beirut 110-32090, Lebanon; Division of Gastroenterology and Hepatology, Mayo Clinic, Jacksonville, FL, USA.