Effects of doule analgesia instrument combined with labor ball on the delivery outcomes and postnatal depression for primipara#br#
CUI Yuexin, SHEN Wei, SHI Li, GUO Hui, WANG Juan, YIN Jie*
Journal of Hebei Medical University . 2017, (7): 789 -792 .  DOI: 10.3969/j.issn.10073205.2017.07.011