He is also Adjunct Associate Professor of Medicine at the National University of Singapore. Professor Gwee has international publications on the role of probiotics in clinical management, post-infectious IBS, the roles of melatonin, sleep disturbance and gluten sensitivity in IBS, endoscopic evaluation of gastro-esophageal reflux disease, and the effect of Helicobacter pylori treatment in dyspepsia. In addition to the management of stomach, liver and bowel disorders, Dr Gwee provides expertise in the management of dyspepsia, indigestion, gas related complaints, bowel habit training and dietary management of food intolerance, refractory GERD and H pylori infection, and small intestinal bacterial overgrowth. His specific hepatology interests are the management of fatty liver and hepatitis E.