1. Department of Clinical Medicine, the First Clinical Medical College of Lanzhou University, Lanzhou, Gansu, China
2. Department of General Surgery, Gansu Provincial Hospital, Lanzhou, Gansu, China
3. Evidence-Based Medicine Center, School of Basic Medical Sciences, Lanzhou University, Lanzhou, Gansu, China
4. Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province, Lanzhou, Gansu, China
5. Key Laboratory of Molecular Diagnosis and Precision Therapy of Surgical Tumors of Gansu Province, Lanzhou, Gansu, China