1 Department of Microbiology & Infectious Disease Center, School of Basic Medicine, Peking University Health Science Center, Beijing, People's Republic of China.
2 SL Consulting, Thousand Oaks, CA, USA.
3 Beijing Key Laboratory of Hepatitis C and Immunotherapy for Liver Diseases, Peking University People's Hospital, Peking University Hepatology Institute, Beijing, People's Republic of China.