1. Department of Gastrointestinal Surgery, Meizhou People's Hospital Meizhou Academy of Medical Sciences Meizhou China
2. Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population Meizhou People's Hospital, Meizhou Academy of Medical Sciences Meizhou China
3. Department of Gastroenterology Meizhou People's Hospital, Meizhou Academy of Medical Sciences Meizhou China
4. Department of Laboratory Medicine Meizhou People's Hospital, Meizhou Academy of Medical Sciences Meizhou China