1. Division of Research, Kaiser Permanente Northern California, Oakland
2. Department of Public Health Sciences, University of California, Davis
3. Kaiser Permanente Washington Health Research Institute, Kaiser Permanente Washington, Seattle
4. Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon
5. Center for Health Research, Kaiser Permanente Hawaii, Honolulu
6. ICES, Toronto, Ontario, Canada
7. Department of Radiology and Biomedical Imaging, University of California, San Francisco
8. Department of Biomedical Engineering, University of Florida, Gainesville
9. Interventional Radiology Section, Washington University in St Louis, St Louis, Missouri
10. Marshfield Clinic Research Institute, Marshfield Clinic Health System, Marshfield, Wisconsin
11. Pediatric Oncology Group of Ontario, Toronto, Ontario, Canada
12. Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
13. Center for Health Research, Genomic Medicine Institute, Geisinger, Danville, Pennsylvania
14. Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, Massachusetts
15. Department of Epidemiology and Biostatistics, University of California, San Francisco
16. Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California, San Francisco