1. Clinical Epidemiology and Evidence-Based Medical Center, National Clinical Research Center for Digestive Disease, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China
2. Liver Research Center, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Translational Medicine on Liver Cirrhosis, National Clinical Research Center for Digestive Disease, Beijing 100050, China
3. School of Computer Science and Technology, Beijing Institute of Technology, Beijing 100081, China