1. Hennepin Healthcare Systems Minneapolis Minnesota
2. Chronic Disease Research Group Hennepin Healthcare Research Institute Minneapolis Minnesota
3. Department of Medicine Hennepin Healthcare Systems Minneapolis Minnesota
4. Scientific Studies & Projects Group, Symphony Health Conshohocken Pennsylvania
5. Institute of Health Economics University of Pennsylvania Philadelphia Pennsylvania
6. Division of Gastroenterology and Hepatology Department of Medicine Stanford University School of Medicine Palo Alto California
7. Department of Epidemiology and Community Health University of Minnesota Minneapolis Minnesota