1 Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA.
2 The Roger Williams Institute of Hepatology, Foundation for Liver Research, London, UK; Faculty of Life Sciences & Medicine, King's College London, United Kingdom.
3 Division of Gastroenterology, Hepatology and Nutrition, Virginia Commonwealth University and Richmond VA Medical Center, Richmond, Virginia, USA. Electronic address: jasmohan.bajaj@vcuhealth.org.