1. Center for Access & Delivery Research and Evaluation, Iowa City Veterans Affairs (VA) Health Care System, Iowa City
2. Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City
3. Center for Healthcare Organization & Implementation Research, VA Bedford Health Care System, Bedford, Massachusetts
4. Center for Population Health, Department of Biomedical & Nutritional Sciences, University of Massachusetts, Lowell
5. VA Puget Sound Health Care System, Seattle, Washington
6. Department of Internal Medicine, University of Washington, Seattle