1. Park Nicollet Institute; HealthPartners; Minneapolis MN USA
2. Division of Health Policy and Management; University of Minnesota; Minneapolis MN USA
3. Division of Epidemiology; University of Minnesota; Minneapolis MN USA
4. Center for Chronic Diseases Outcomes Research; Minneapolis VAMC; Minneapolis MN USA
5. Department of Medicine; University of Minnesota; Minneapolis MN USA
6. California Pacific Medical Center Research Institute; San Francisco CA USA
7. Departments of Epidemiology and Biostatistics; University of California; San Francisco CA USA
8. Departments of Medicine; University of California; San Francisco CA USA
9. Oregon Health Sciences University; Portland OR USA
10. University of California Davis; Davis CA USA
11. University of California; San Diego CA USA