1. Department of MedicineUniversity of MinnesotaMinneapolis Minnesota
2. Division of Epidemiology and Community HealthUniversity of MinnesotaMinneapolis Minnesota
3. Center for Chronic Disease Outcomes ResearchVeterans Affairs Health Care SystemMinneapolis Minnesota
4. HealthPartners InstituteBloomington Minnesota
5. Division of Health Policy and ManagementUniversity of MinnesotaMinneapolis Minnesota
6. California Pacific Medical Center Research InstituteSan Francisco California
7. Department of Epidemiology and BiostatisticsUniversity of California, San FranciscoSan Francisco California
8. Center for Health ResearchKaiser Permanente NorthwestPortland Oregon
9. Department of PsychiatryUniversity of California, San FranciscoSan Francisco California
10. Department of NeurologyUniversity of California, San FranciscoSan Francisco California
11. Department of EpidemiologyUniversity of California, San FranciscoSan Francisco California
12. Department of EpidemiologyUniversity of PittsburghPittsburgh Pennsylvania