1. Department of Public Health Sciences; Henry Ford Health System; Detroit MI USA
2. Division of Gastroenterology and Hepatology; Henry Ford Health System; Detroit MI USA
3. Center for Health Policy and Health Services Research; Henry Ford Health System; Detroit MI USA
4. Division of Viral Hepatitis; National Center for HIV, Hepatitis, STD, and TB Prevention; Centers for Disease Control and Prevention; Atlanta GA USA
5. Department of Epidemiology and Health Services Research; Geisinger Clinic; Danville PA USA
6. Center for Health Research; Kaiser Permanente-Northwest; Portland OR USA
7. Center for Health Research; Kaiser Permanente-Hawaii; Honolulu HI USA