Department of Psychiatry, George Washington University Medical Center, Washington, DC;
Best Practice LLC Bethesda, Md;
Division of Research, Kaiser Permanente Medical Care Program, Oakland, Calif;
Center for Health Studies, Group Health Cooperative, Seattle, Wash;
Division of Research, Kaiser Permanente Medical Care Program, Oakland, Calif;
Division of Research, Kaiser Permanente Medical Care Program, Oakland, Calif;
Center for Health Outcomes Research, MEDTAP International Bethesda, Md;