1 The First Clinical Medical School, Gansu University of Chinese Medicine, Lanzhou, 730000, China; Second Ward of General Surgery, Gansu Province People Hospital, Lanzhou, 730000, China.
2 Second Ward of General Surgery, Gansu Province People Hospital, Lanzhou, 730000, China.
3 Second Ward of General Surgery, Gansu Province People Hospital, Lanzhou, 730000, China; The First Clinical Medical College of Lanzhou University, Lanzhou, 730000, China; Gansu Provincial Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors, Lanzhou, 730000, China; Gansu Engineering Research Center for Prevention and Control of Digestive Tract Malignancies, Lanzhou, 730000, China; Key Lab for Diagnosing and Treating Gastrointestinal Tumors, National Health and Welfare Commission, Lanzhou, 730000, China. Electronic address: yangxjmd@aliyun.com.