Division of Gastroenterology and Hepatology, Key Laboratory of Gastroenterology and Hepatology, Ministry of Health, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai Institute of Digestive Disease, Shanghai, China. Division of Hepatology, Tianjin Third Hospital, Tianjin, China. Division of Gastroenterology and Hepatology, Beijing You'an Hospital, Capital Medical University, Beijing, China. Department of Infectious Diseases, Xixi Hospital of Hangzhou, Hangzhou, Zhejiang Province, China. Department of Infectious Diseases, Nanjing Bayi Hospital, Nanjing, Jiangsu Province, China. Department of Infectious Diseases, Beijing Ditan Hospital, Capital Medical University, Beijing, China. Department of Infectious Diseases, 302 Military Hospital of China, Beijing, China. Division of Hepatology, 85 Hospital of People's Liberation Army, Shanghai, China. Department of Infectious Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China. Department of Infectious Diseases, Southwest Hospital, Chongqing, China. Department of Infectious Diseases, First Hospital of Jilin University, Changchun, Jilin Province, China.