1. Division of Viral Hepatitis, Centers for Disease Control and Prevention (CDC), Atlanta, Georgia, USA
2. Henry Ford Health System, Detroit, Michigan, USA
3. The Center for Health Research, Kaiser Permanente Northwest, Portland, Oregon, USA
4. The Center for Integrated Health Research, Kaiser Permanente Hawaii, Honolulu, Hawaii, USA
5. Department of Population Health Sciences, Geisinger Clinic, Danville, Pennsylvania, USA
6. Wayne State University School of Medicine, Detroit, Michigan, USA