| Affiliation: | 1. Harvard Medical School, Boston, Massachusetts, USA;2. Division of General Internal Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA;5. Division of Gastroenterology, Beth Israel Deaconess Medical Center, Boston, Massachusetts, USA;3. Department of Biomedical Informatics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA;4. Kaiser Permanente of Washington Health Research Institute (formerly Group Health Research Institute), Seattle, Washington, USA;6. Division of Gastroenterology, Hepatology and Nutrition, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA;7. Division of Gastroenterology and Hepatology, University of North Carolina School of Medicine, Chapel Hill, North Carolina, USA |
