1. Department of Gastroenterology St Vincent's Hospital Melbourne Victoria Australia
2. Dr Henry D. Janowitz Division of Gastroenterology, The Susan and Leonard Feinstein Inflammatory Bowel Disease Center Icahn School of Medicine at Mount Sinai New York New York United States
3. Department of Gastroenterology, Key Laboratory of Hubei Province for Digestive System Disease, Hubei Provincial Clinical Research Center for Digestive Disease Minimally Invasive Incision Renmin Hospital of Wuhan University Wuhan China