1. Department of Clinical Laboratory, Jiading District Central Hospital of Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China
2. Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China
3. Department of Gastroenterology, Third Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330008, P.R. China
4. Department of Oncology, Jiading District Central Hospital of Shanghai University of Medicine and Health Sciences, Shanghai 201800, P.R. China