1 Department of Hepatobiliary Surgery, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin, China.
2 The First Central Clinical School, Tianjin Medical University, Tianjin, China.
3 Department of Hepatobiliary Surgery, Tianjin First Central Hospital, School of Medicine, Nankai University, Tianjin, China. Electronic address: 15733189135@163.com.