Institution: | Ying-Chun Wang, Lei Dong, Department of Gastroenterology, the Second Affiliated Hospital, Xi’an Jiaotong University, Xi’an 710004, Shaanxi Province, ChinaYing-Chun Wang, Wei-Zong Kong, Qing-Mei Jin, Juan Chen, Department of Gastroenterology, Affiliated Zhongshan Hospital of Dalian University, Dalian 116001, Liaoning Province, China |