Zatuchni, G I Prognostic index for vaginal delivery in breech presentation at term. Prospective study. [electronic resource] - American journal of obstetrics and gynecology Jul 1967 - 854-7 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(67)90204-9 doi Subjects--Topical Terms: AdultCesarean SectionDelivery, ObstetricFemaleFetal Death--epidemiologyHumansInfant, NewbornLabor PresentationMorbidityPennsylvaniaPregnancyProspective Studies