1. Department of General Surgery, Renji Hospital, School of Medicine Shanghai Jiao Tong University Shanghai China
2. Department of Biliary‐Pancreatic Surgery, Renji Hospital, School of Medicine Shanghai Jiao Tong University Shanghai China
3. Department of Critical Care Medicine, Shanghai East Hospital Tongji University of School Medicine Shanghai China
4. Department of Radiology, Renji Hospital, School of Medicine Shanghai Jiao Tong University Shanghai China
5. Department of Biostatistics, Clinical Research Institute Shanghai Jiao Tong University School of Medicine Shanghai China
6. Department of Pathology, Renji Hospital, School of Medicine Shanghai Jiao Tong University Shanghai China