1Department of the First Clinical Medical College, Lanzhou University, Lanzhou, 730000 People’s Republic of China
2Department of Medical Oncology, The First Hospital of Lanzhou University, Lanzhou, 730000 People’s Republic of China
3Department of Surgery, The First Hospital of Lanzhou University, Lanzhou, 730000 People’s Republic of China
4Department of Gastroenterology, The First Hospital of Lanzhou University, Lanzhou, 730000 People’s Republic of China
5Key Laboratory for Gastrointestinal Disease of Gansu Province, The First Hospital of Lanzhou University, Lanzhou, 730000 People’s Republic of China
6Department of Oncology Surgery, The First Hospital of Lanzhou University, No. 1, Donggang West Road, Chengguan District, Lanzhou, 730000 Gansu People’s Republic of China
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