1. Hennepin Healthcare Research Institute Minneapolis Minnesota USA
2. Department of Psychiatry Hennepin Healthcare Minneapolis Minnesota USA
3. Department of Medicine University of Minnesota Medical School Minneapolis Minnesota USA
4. Health Care Division RAND Corporation Pittsburgh Pennsylvania USA
5. Health Care Division RAND Corporation Boston Massachusetts USA
6. Health Partners Institute Bloomington Minnesota USA
7. Kaiser Permanente Center for Health Research Portland Oregon USA
8. Psychiatry and Behavioral Sciences Medical University of South Carolina Charleston South Carolina USA
9. Department of Dentistry Eastman Institute for Oral Health, University of Rochester Medical Center Rochester New York USA
10. Tinley Park Illinois USA