1. Section of General Internal Medicine, Veterans Affairs (VA) Portland Health Care System, Portland, Oregon2Division of General Internal Medicine and Geriatrics, Oregon Health & Science University, Portland
2. Department of Medical Informatics and Clinical Epidemiology, Oregon Health & Science University, Portland
3. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts5Division of General Internal Medicine and Primary Care, Beth Israel Deaconess Medical Center, Boston, Massachusetts