1. Liver Transplantation Center, Beijing Friendship Hospital, Capital Medical University and National Clinical Research Center for Digestive Diseases, Beijing, China (mainland)
2. Department of General Surgery, Beijing Friendship Hospital, Capital Medical University and National Clinical Research Center for Digestive Diseases, Beijing, China (mainland)
3. Department of Anesthesia, Beijing Friendship Hospital, Capital Medical University, Beijing, China (mainland)
4. Department of Ultrasound, Beijing Friendship Hospital, Capital Medical University, Beijing, China (mainland)