1. Center for Health Policy & Health Services Research, Henry Ford Health, Detroit, MI, USA
2. Wayne State University School of Medicine, Detroit, MI, USA
3. Kaiser Permanente Washington Health Research Institute, Seattle, WA, USA
4. Center for Health Research, Kaiser Permanente Northwest, Portland, OR, USA
5. Kaiser Permanente Colorado, Institute for Health Research, Aurora, CO, USA
6. Georgia State University School of Public Health, Atlanta, GA, USA
7. Center for Research and Evaluation, Kaiser Permanente Georgia, Atlanta, GA, USA
8. Research and Evaluation Division, HealthPartners Institute, Minneapolis, MN, USA
9. Kaiser Permanente Hawaii Center for Integrated Health Care Research, Honolulu, HI, USA
10. Department of Population Medicine, Harvard Pilgrim Health Care Institute and Harvard Medical School, Boston, MA, USA
11. Essentia Institute of Rural Health, Duluth, MN, USA