1. Center for Health Research Kaiser Permanente Northwest Portland Oregon USA
2. Center for Integrated Health Research Kaiser Permanente Hawaii Honolulu Hawaii USA
3. Division of Research Kaiser Permanente Northern California Oakland California USA
4. Kaiser Permanente Washington Health Research Institute Kaiser Permanente Washington Seattle Washington USA
5. Center for Health Research, Genomic Medicine Institute Geisinger Health System Danville Pennsylvania USA
6. Marshfield Clinic Research Institute Marshfield Clinic Health System Marshfield Wisconsin USA
7. Department of Population Medicine Harvard Medical School and Harvard Pilgrim Health Care Institute Boston Massachusetts USA
8. The Hospital for Sick Children Toronto Ontario Canada
9. ICES Toronto Ontario Canada
10. Centre for Health Services Research The University of Queensland Brisbane Queensland Australia
11. Department of Radiology and Biomedical Imaging, Epidemiology and Biostatistics University of California San Francisco California USA
12. The Philip R. Lee Institute for Health Policy University of California San Francisco California USA
13. Department of Public Health Sciences University of California Davis California USA