1. Department of Gastroenterology, Minhang Hospital, Fudan University , Shanghai, 201199 , China
2. Key laboratory of whole-period monitoring and precise intervention of digestive cancer, Shanghai Municipal Health Commission (SMHC), Minhang Hospital, Fudan University , Shanghai, 201199 , China
3. People’s Hospital of Daguan County, No.3 Internal medicine department , Daguan county, Yunnan province, 657400 , China