1. Division of Gastroenterology, Department of Medicine, Veterans Affairs Puget Sound Healthcare System and University of Washington, Seattle
2. Research and Development, Veterans Affairs Puget Sound Healthcare System, Seattle, Washington
3. Department of Statistics, University of Michigan, Ann Arbor
4. Division of General Internal Medicine, Department of Medicine, Veterans Affairs Puget Sound Healthcare System and University of Washington, Seattle
5. Michigan Medicine, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Ann Arbor
6. VA Ann Arbor Health Services Research and Development Center of Clinical Management Research, Ann Arbor, Michigan
7. Michigan Integrated Center for Health Analytics and Medical Prediction (MiCHAMP), Ann Arbor
8. Division of Gastroenterology, Department of Medicine, University of Texas Southwestern, Dallas