title: Extra-membranous pregnancy, prolonged ruptured membranes and circumvallate placenta.
authors.forename: Leea
authors.initials: L
authors.lastname: Keski-Nisula
authors.forename: Päivi
authors.initials: P
authors.lastname: Heiskanen
authors.forename: Seppo
authors.initials: S
authors.lastname: Heinonen
mesh_terms: D000328:Adult; D001034:Apgar Score; D002585:Cesarean Section; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000000981:diagnostic imaging* / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D008423:Maternal Age; D016104:Oligohydramnios / Q000175:diagnosis / Q000000981:diagnostic imaging*; D010298:Parity; D010922:Placenta Diseases / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D011247:Pregnancy; D011256:Pregnancy Outcome; D011262:Pregnancy Trimester, Second; D016216:Ultrasonography, Prenatal