[1
]Department of Gastrointestinal Surgery; Chengdu Fifth People's Hospital; Chengdu Sichuan
China
[2
]Department of Gastrointestinal Surgery, West China Hospital; Sichuan University; Chengdu
Sichuan China
[3
]State Key Laboratory of Biotherapy and Cancer Center, West China Hospital; Sichuan
University; Chengdu Sichuan Province China