1 Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Heping District, Shenyang, People's Republic of China.
2 Department of Clinical Medicine of Year 2017, Dalian Medical University, Dalian, People's Republic of China.
3 Department of Surgical Oncology and General Surgery, The First Hospital of China Medical University; Key Laboratory of Precision Diagnosis and Treatment of Gastrointestinal Tumors (China Medical University), Ministry of Education, Heping District, Shenyang, People's Republic of China. zgykdxdyyy@163.com.