title: Classification of hourglass-shaped fetal membranes.
authors.forename: U
authors.initials: U
authors.lastname: Nwosu
mesh_terms: D002584:Cervix Uteri / Q000502:physiology / Q000601:surgery; D004630:Emergencies; D005321:Extraembryonic Membranes / Q000473:pathology*; D005260:Female; D005322:Premature Rupture of Fetal Membranes / Q000517:prevention & control*; D006801:Humans; D007752:Obstetric Labor, Premature / Q000517:prevention & control*; D011247:Pregnancy; D011391:Prolapse; D013536:Suture Techniques