The effect of lumbar epidural analgesia on the rate of cervical dilation and the outcome of labour of spontaneous outset.
D000767:Anesthesia, Epidural; D000773:Anesthesia, Obstetrical; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D011247:Pregnancy; D014590:Uterine Contraction / Q000187:drug effects*