1 Department of Gastroenterology, Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China
2 Department of General Surgery, Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China
3 Department of Gastroenterology, Affiliated Changzhou No. 2 People’s Hospital of Nanjing Medical University, Changzhou, Jiangsu Province, China. wxy20009@126.com