1 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, China.
2 Department of Pathology, The First Affiliated Hospital of Wannan Medical College, Wuhu, China.
3 Center of Hemodialysis, The First Affiliated Hospital of Wannan Medical College, Wuhu, China. Electronic address: 609952596@qq.com.
4 Department of Gastrointestinal Surgery, The First Affiliated Hospital of Wannan Medical College, Wuhu, China. Electronic address: shilianghui1020@163.com.