title: Perineal anesthesia in the expulsive period in primiparas.
authors.forename: E
authors.initials: E
authors.lastname: BOTTIROLI
mesh_terms: D000758:Anesthesia; D000773:Anesthesia, Obstetrical; D000776:Anesthesiology; D005260:Female; D006176:Gynecology; D006801:Humans; D009774:Obstetrics; D011247:Pregnancy
vernacular_title: Anestesia perineal en el período expulsivo en primiparas.