1. Department of Hepatology Division 3, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China
2. Center of Liver Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China
3. Beijing Key Laboratory of Emerging Infectious Diseases, Institute of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, P.R. China