1. Section of General Internal Medicine and Health Services Research and Development Service, Portland Veterans Affairs Medical Center, Division of General Internal Medicine & Geriatrics and Department of Medical Informatics & Clinical Epidemiology, Oregon Health & Science University, Portland, Ore,
2. Section of General Internal Medicine and Health Services Research and Development Service, Portland Veterans Affairs Medical Center, Division of General Internal Medicine & Geriatrics and Department of Medical Informatics & Clinical Epidemiology, Oregon Health & Science University, Portland, Ore