| Affiliation: | 1. Section of Digestive Disease and Nutrition, Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA;2. Division of Gastroenterology, Department of Medicine, Oklahoma Foundation for Digestive Research, Oklahoma University School of Medicine, 525 Northwest 9th Street, Suite 325, Oklahoma City, OK 73102, USA;1. Division of Gastroenterology and Hepatology, University of Colorado Anschutz Medical Campus, Mail Stop F735, 1635 Aurora Court, Room 2.031, Aurora, CO 80045, USA;2. Division of Gastroenterology and Hepatology, Veterans Affairs Medical Center and University of Kansas, 4801 Linwood Boulevard, Kansas City, MO 64128, USA |
