1. Department of General Surgery & Guangdong Province Key Laboratory of Precision Medicine for Gastrointestinal Tumor The First School of Clinical Medicine Nanfang HospitalSouthern Medical University Guangzhou China
2. Department of Obstetrics and Gynaecology Nanfang HospitalSouthern Medical University Guangzhou China
3. Department of General Surgery Traditional Chinese and Western Medicine HospitalSouthern Medical University Guangzhou China