1. Division of Gastroenterology & Farncombe Family Digestive Health Research Institute McMaster University Hamilton Ontario Canada
2. Faculty of Medical Sciences Newcastle University Newcastle upon Tyne UK
3. Division of Gastroenterology Northwestern University Chicago Illinois USA
4. Barts and The London School of Medicine and Dentistry Queen Mary, University of London London UK
5. INSINC Consulting Inc. Guelph Ontario Canada
6. Division of Gastroenterology Vanderbilt University Medical Center Nashville Tennessee USA
7. Division of Gastroenterology and Hepatology Veterans Affairs Medical Center University of Kansas School of Medicine Kansas City Missouri USA