Vincent Wai-Sun Wong1, Fasiha Kanwal2. 1. Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, The Chinese University of Hong Kong, Hong Kong. 2. Professor of Medicine, Chief, Gastroenterology and Hepatology, Sections of Gastroenterology and Hepatology, Health Services Research, Department of Medicine, Baylor College of Medicine, VA HSR&D Center for Innovations in Quality, Effectiveness, and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas.