[Prolonged labor: influence on perinatal mortality. Comparison of 2 periods].
D004420:Dystocia; D005260:Female; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007743:Labor, Obstetric; D066087:Perinatal Death; D054238:Perinatal Mortality; D011247:Pregnancy
DYSTOCIA; INFANT MORTALITY