1. Department of Epidemiology and Biostatistics, University at Albany School of Public Health, State University of New York, Rensselaer
2. Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, Georgia
3. Division of Viral Hepatitis, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
4. Office of the Director, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia