1 1] Leeds Gastroenterology Institute, St James's University Hospital, Leeds, UK  First author on the monograph, but is not a member of the Task Force.
2 1] Farncombe Family Digestive Health Research Institute, Division of Gastroenterology, McMaster University, Hamilton, Ontario, Canada  Conducted systematic reviews with the support of A.C. Ford, and carried out the technical analyses of the data independent of the Task Force.
3 Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
4 Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA.
5 Mayo Clinic, Rochester, Minnesota, USA.
6 Baylor University Medical Center, Digestive Health Associates of Texas, Dallas, Texas, USA.
7 Division of Gastroenterology, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
8 UCLA School of Medicine, UCLA/VA Center for Outcomes Research and Education (CORE), Los Angeles, California, USA.
9 Division of Gastroenterology and Hepatology, Houston Methodist Hospital and Weill Cornell Medical College, Houston, Texas, USA.