Kaiser-Permanente of Colorado, Aurora, Colorado, United States
South Sacramento Kaiser Permanente, Sacramento, California, United States
Group Health Center for Health Studies, Seattle, Washington, United States
Kaiser Permanente Center for Health Research, Portland, Oregon, United States
Free and Clear, Inc., Seattle, Washington, United States
Oregon Health Division/Center for Disease Prevention Epidemiology, Portland, Oregon, United States
Kaiser Permanente Sunset, Los Angeles, California, United States
Kaiser Permanente of Colorado, Aurora, Colorado, United States
Group Health Research Institute, Seattle, Washington, United States
Kaiser Permanente, San Francisco, California, United States
Kaiser-Permanente, Santa Rosa, California, United States
Kaiser Permanente Medical Center, Los Angeles, California, United States