1 Department of Anaesthesiology, Eastern Hepatobiliary Surgery Hospital, the Second Military Medical University, Shanghai, 200433, China.
2 Department of Gastroenterology, Shanghai Hospital, the Second Military Medical University, Shanghai, 200433, China.
3 Department of Radiology, Changzheng Hospital, the Second Military Medical University, Shanghai, 200003, China.
4 Department of Anaesthesiology, Eastern Hepatobiliary Surgery Hospital, the Second Military Medical University, Shanghai, 200433, China. Electronic address: lzjwxyz@163.com.
5 Department of Gastroenterology, Shanghai Hospital, the Second Military Medical University, Shanghai, 200433, China. Electronic address: lianghao-hu@hotmail.com.