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