1 Division of Viral Hepatitis, National Center for HIV/AIDS Viral Hepatitis, STD, and TB Prevention.
2 Research Data Center, National Center for Health Statistics.
3 Office of Directors, National Center for HIV/AIDS, Viral Hepatitis, STD, and TB Prevention.
4 Division of Laboratory Systems, Center for Surveillance, Epidemiology, and Laboratory Services, Centers for Disease Control and Prevention, Atlanta, GA.