The influence of residual oligohydramnios on perinatal outcome of early preterm premature rupture of membranes
TONG Chongxin1, LIU Jing2, SHAN Ling1, YIN Hongya1
Journal of Hebei Medical University . 2017, (2): 159 -163 .  DOI: 10.3969/j.issn.10073205.2017.02.09