1. Section of Gastroenterology and Hepatology, Department of Medicine, Baylor College of Medicine, Houston, Texas
2. Section of Health Services Research, Department of Medicine, Baylor College of Medicine, Houston, Texas
3. Health Services Research and Development Center for Innovations in Quality, Effectiveness, and Safety, Michael E. DeBakey Veterans Affairs Medical Center, Houston, Texas
4. Center for Innovation to Implementation, Veterans Affairs Palo Alto Health Care System, Palo Alto, California
5. Department of Surgery, Baylor College of Medicine, Houston, Texas
6. Section of Geriatrics and Palliative Medicine, Department of Medicine, Baylor College of Medicine, Houston, Texas
7. Veterans Administration Connecticut Healthcare System, New Haven
8. Department of Medicine, Yale University, New Haven, Connecticut
9. Division of Primary Care and Population Health, Department of Medicine, Stanford University, Stanford, California