1. Johns Hopkins School of Medicine Baltimore Maryland USA
2. National Center for Disease Control and Public Health Tbilisi Georgia
3. Division of Viral Hepatitis National Center for HIV, Hepatitis, STD&TB PreventionCenters for Disease Control and Prevention Atlanta Georgia USA
4. South Caucasus Office of the U.S. Centers for Disease Control (CDC) Tbilisi Georgia
5. Vitalant Research Institute (formerly Blood Systems Research Institute) San Francisco California USA
6. University of California San Francisco San Francisco California USA