Analysis of the factors affecting the detection rate of esophageal and gastric mucosa ectopic and the evaluation of the quality of esophageal examination
PING Fumin， GUO Yongze*， WANG Jing， GU Shuxin
Journal of Hebei Medical University . 2017, (6): 642 -645 .  DOI: 10.3969/j.issn.10073205.2017.06.006