title: [Effect of duration of labor on postnatal infant mortality. Analysis of the general postnatal mortality rate of newborn infants delivered in the Wroclaw district in 1968].
mesh_terms: D005260:Female; D006801:Humans; D007223:Infant; D007226:Infant Mortality; D007231:Infant, Newborn; D007743:Labor, Obstetric; D007744:Obstetric Labor Complications; D011044:Poland; D011247:Pregnancy; D013997:Time Factors
vernacular_title: Wpływ czasu trwania porodu na umieralność poporodwa noworodków analiza ogólnej umieralności poporodowej noworodków urodzonych w województwie wrocławskim w roku 1968.