title: [Etiology of immature and premature labor].
mesh_terms: D005260:Female; D005865:Gestational Age; D006801:Humans; D007743:Labor, Obstetric; D007752:Obstetric Labor, Premature / Q000209:etiology; D010298:Parity; D011247:Pregnancy
vernacular_title: Niektóre zagadnienia z etiologii porodów niewczesnych i przedwczesnych.