title: Transperineal sonography in the diagnosis of placenta previa.
authors.forename: M
authors.initials: M
authors.lastname: Zilianti
mesh_terms: D005260:Female; D006801:Humans; D010502:Perineum; D010923:Placenta Previa / Q000000981:diagnostic imaging*; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D016216:Ultrasonography, Prenatal / Q000379:methods*