Shanghai Jiao Tong University (SJTU) - Core Laboratory in Medical Center of Clinical Research, Government of the People's Republic of China - Changzheng Hospitalm Department of Pancreatic-Biliary Surgery, Shanghai Jiao Tong University (SJTU) - Department of Biliary-Pancreatic Surgery, Shanghai Jiao Tong University (SJTU) - Core Laboratory in Medical Center of Clinical Research, Shanghai Jiao Tong University (SJTU) - Department of Biliary-Pancreatic Surgery, Shanghai Jiao Tong University (SJTU) - Department of Pathology, Shanghai Jiao Tong University (SJTU) - Department of Pathology, Shanghai Jiao Tong University (SJTU) - Department of Biliary-Pancreatic Surgery, Shanghai Jiao Tong University (SJTU) - Department of Biliary-Pancreatic Surgery and Shanghai Jiao Tong University (SJTU) - Department of Biliary-Pancreatic Surgery