title: [Breech presentation in primiparae over 30 years of age].
authors.forename: S O
authors.initials: SO
authors.lastname: do VAL
mesh_terms: D001946:Breech Presentation; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D010298:Parity; D011247:Pregnancy; D014937:Work