共 4 条
[1]
Self-Testing of Vaginal pH to Prevent Preterm Delivery A Controlled Trial
[J].
DEUTSCHES ARZTEBLATT INTERNATIONAL,
2011, 108 (06)
:81-U22
[2]
DONDERS, 2009, BJOG, V116, P1315
[4]
FOXMAN, 2014, AJOG, V210, P226