Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;
Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;
Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;
Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;
Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;
Division of Hepatobiliary and Pancreatic Surgery, First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China;