1 Department of Gastroenterology, NYU Grossman School of Medicine, Bellevue Hospital Center, New York, New York, USA.
2 Division of Gastroenterology and Hepatology, Oregon Health & Science University, Portland, Oregon, USA.
3 Department of Gastroenterology, Massachusetts General Hospital, Boston, Massachusetts, USA.
4 Department of Gastroenterology, Penn Medicine Princeton Medical Center, Plainsboro, New Jersey, USA.
5 Division of Gastroenterology and Hepatology, Dell Medical School, University of Texas at Austin, Austin, Texas, USA.
6 GI Associates, Milwaukee, Wisconsin, USA.
7 Division of Gastroenterology, University of Montreal Hospital and Research Center, Montreal, Quebec, Canada.
8 Department of Gastroenterology, Duke University Medical Center, Durham, North Carolina, USA.
9 Department of Digestive Diseases, Cleveland Clinic, Cleveland, Ohio, USA.
10 Department of Gastroenterology, White River Junction VA Medical Center, White River Junction, Vermont, USA; Department of Gastroenterology, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.