15 °床面角度在食管支架推送器入口时的应用价值
韩久付1，郑昌英2，王晓强3，曹雅杰1，尹春国4
Journal of Hebei Medical University . 2017, (2): 237 -239 .  DOI: 10.3969/j.issn.10073205.2017.02.029