1. From the Division of Gastroenterology and Division of Clinical Epidemiology, McGill University Health Centre, Montreal General Hospital, McGill University, Montreal (A.B.); and Centre d’Investigation Clinique 1432 and Division of Gastroenterology, Centre Hospitalier Universitaire Dijon–Bourgogne, and Unité de Formation et de Recherche Sciences Santé, Université Bourgogne Franche Comté, Dijon, France (M.B.).