James M Scheiman1, Joo Ha Hwang2, Paul Moayyedi3. 1. Department of Internal Medicine and Gastroenterology, University of Michigan Medical School, Ann Arbor, Michigan. 2. Division of Gastroenterology, Department of Medicine, University of Washington, Seattle, Washington. 3. Division of Gastroenterology, Hamilton Health Sciences, Farncombe Family Digestive Health Research Institute, McMaster University Hamilton, Ontario, Canada.