1. Clinical Research Unit, Kaiser Permanente, PO Box 378066, Denver, CO, 80237-8066, USA, , Department of Family Medicine, University of Colorado Health Sciences Center, Denver, CO, USA
2. Center for Health Services Research in Primary Care, Durham VAMC, Durham NC, USA, Departments of Medicine, Psychiatry, and School of Nursing, Duke University Medical Center, Durham, NC, USA
3. VERDICT HSR&D Center, South Texas Veterans Health Care System, TX, USA, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA
4. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
5. Roudebush VAMC HSRD Center of Excellence on Implementation of Evidence Based Practices, VA Stroke QUERI Center, Indiana University Center for Aging Research, Regenstrief Inc., Indianapolis, IN, USA
6. Department of Veterans Affairs, Health Services R & D Service, Washington, DC, USA