Affiliation: | Wei-Dong Fan, Department of Gastroenterology, the Affiliated Zhangjiagang Hospital of Soochow University, Zhangjiagang 215600, Jiangsu Province, ChinaTao Chen, Peng-Jun Liu, Department of Gastroenterology, the Wujin Hospital Affiliated to Jiangsu University, Changzhou 213002, Jiangsu Province, China |