Department of Anorectal Surgery;
the Eighth Hospital;
Wu-han 430030;
Hubei Province;
China;
Department of On-cology;
Tongji Hospital;
Tongji Medical College;
HuazhongUniversity of Science and Technology;
Wuhan 430030;
HubeiProvince;
China;
Department of Surgery;
Tongji Hospital;
Tongji Medi-cal College;
Huazhong University of Science and Technology;
Wuhan 430030;
Hubei Province;
China;