An innovative steroid application for preventing esophageal stricture in patients undergoing circumferential endoscopic submucosal dissection Yonghong Luo; Tingfa Peng; Bing Hu; Liansong Ye;

Endoscopic retrieval of large nails in the distal duodenum Liansong Ye; Wenjuan Yang; Jiang Du; Ke Liao; Bing Hu;

Adjunctive Resection of Residual Mucosal Flap During Z-POEM for Large Zenker¿s Diverticulum Zhongshang Sun; Xu Fazhen; Xiaozhong Yang; Aijun Zhou; Hu Bing; Liansong Ye; Feng Pan;