1. Department of Microbiology and Center of Infectious Diseases, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
2. Clinical Laboratory Center, Beijing Friendship Hospital, Capital Medical University, Beijing, China
3. Department of Nutrition and School Hygien, Liuzhou Municipal Center for Disease Control and Prevention, Liuzhou, Guangxi, China
4. Guangxi Key Laboratory of the Prevention and Control of Viral Hepatitis, Guangxi Zhuang Autonomous Region Center for Disease Prevention and Control, Nanning, Guangxi, China
5. Department of Medical, Shenzhen Kangtai Biological Products Co., LTD., Shenzhen, Guangdong, China