1. Department of Hepatobiliary-Pancreatic Surgery, Zhejiang Provincial People's Hospital (ZJPPH), Hangzhou, Zhejiang, PR China
2. Department of General Surgery, Affiliated Yiwu Hospital, Wenzhou Medical University, Yiwu, Zhejiang, PR China
3. Department of Surgery, Qilu Hospital, Shandong University School of Medicine, Jinan, Shandong, PR China
4. Department of Radiology, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China
5. Department of Gastroenterology, Shanghai Public Health Clinical Center, Fudan University, Shanghai, PR China