[1]Department of pancreatic surgery, Huashan hospital, FuDan University, Shanghai, China; Department of Pancreatic surgery, Huashan hospital, Fudan University, Shanghai, China; Pancreatic Disease Institution, Shanghai Medical college, Fudan University, Shanghai, China; Pancreatic Disease Institute, Department of Pancreatic Surgery, Huashan Hospital, Fudan University, Shang Hai, China; Department of pancreatic surgery, Pancreatic Disease Institution, Huashan hospital, Fudan University, Shanghai, China