1. Division of Clinical Research First Hospital of Jilin University Changchun China
2. Zhengzhou Municipal Center for Disease Control and Prevention Zhengzhou China
3. Jiangsu Provincial Center for Disease Control and Prevention Nanjing China
4. Department of Hepatology First Hospital of Jilin University Changchun China
5. Department of Microbiology and Infectious Disease Center School of Basic Medical Sciences Peking University Health Science Center Beijing China