1. Corporal Michael J. Crescenz VA Medical Center Philadelphia PA
2. Division of Gastroenterology University of Pennsylvania Perelman School of Medicine Philadelphia PA
3. Leonard Davis Institute of Health Economics Philadelphia PA
4. Department of Biostatistics, Epidemiology and Informatics University of Pennsylvania Philadelphia PA
5. Renal‐Electrolyte and Hypertension Division University of Pennsylvania Perelman School of Medicine Philadelphia PA
6. Health Services Research and Development Seattle WA
7. General Medicine Service VA Puget Sound Health Care System Seattle WA
8. Division of General Internal Medicine University of Washington Seattle WA
9. VA Connecticut Healthcare System West Haven CT
10. Division of Gastroenterology Yale University School of Medicine New Haven CT
11. Division of General Internal Medicine University of Pennsylvania Perelman School of Medicine Philadelphia PA