| Institution: | (1) Center for Health Studies, Group Health Cooperative, 98101 Washington, Seattle, USA;(2) Department of Epidemiology, University of Washington, 98195 Washington, Seattle, USA;(3) Departments of Family Medicine and Health Services, University of Washington, 98195 Washington, Seattle, USA;(4) Department of Psychiatry, University of Vermont, 05405 Burlington, Vermont, USA;(5) Harvard Medical School Osher Institute and Division for Research and Education in Complementary and Integrative Medical Therapies, Harvard Medical School, 02215 Boston, Massachusetts, USA;(6) Departments of Medicine and Health Services, University of Washington, Washington, Seattle, USA |
