Three strategies for displaying the postcricoid space and pyriform sinus: A matched case‐controlled study of 50 patients. (18th December 2018) - Zhu, Gangcai; Peng, Ou; Li, Shaohong; Zhu, Ganghua; Wang, Shuhui; Liu, Jiajia; Yin, Danhui; Peng, Xia; Yang, Tao; Tang, Qinglai; Yang, Xinming