[1] Northwest Center of Excellence,Health Services Research & Development (HSR&D)
[2] Veterans Affairs (VA) Puget Sound Health Care System,General Medicine Service
[3] Center of Excellence in Substance Abuse Treatment and Education (CESATE),Department of Medicine
[4] Veterans Affairs (VA) Puget Sound Health Care System,Department of Health Services
[5] University of Washington,School of Medicine and Public Health
[6] University of Washington,undefined
[7] Group Health Research Institute,undefined
[8] University of Newcastle,undefined