1. Department of Immunology, College of Basic Medical Sciences, Jilin University, Changchun, China
2. Key Laboratory of the Ministry of Health for Research on Quality and Standardization of Biotech Products, Division of Hepatitis Virus Vaccines, National Institutes for Food and Drug Control, Beijing, China
3. Shandong Provincial Center for Disease Control and Prevention, Jinan, China
4. Jiangsu Provincial Center for Disease Control and Prevention, Nanjing, China
5. Department of Molecular Biology, College of Basic Medical Sciences, Jilin University, Changchun, China