Zhang Qiang, Yao Xiang, Wang Zhen
Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China.
VideoGIE. 2018 Mar 13;3(4):137-141. doi: 10.1016/j.vgie.2018.01.002. eCollection 2018 Apr.