Authors: Yan Ke; Sanne N van Munster; Liyan Xue; Shun He; Yueming Zhang; Lizhou Dou; Yong Liu; Xudong Liu; Yumeng Liu; Wei Li; Ning Lv; Sanford M Dawsey; Bas L A M Weusten; Jacques J G H M Bergman; Guiqi Wang Journal: Gastrointest Endosc Date: 2019-03-25 Impact factor: 9.427