1 MBBS Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Department of Medicine, Division of Gastroenterology and Hepatology, National University Hospital, Singapore; National University Centre for Organ Transplantation, National University Health System, Singapore. Electronic address: [email protected].
2 Department of Internal Medicine, Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University, Richmond, VA, USA.