title: Comment on opinion 'ultrasound is the future diagnostic tool in active labor'. Intrapartum transperineal ultrasound - much ado about nothing?
authors.forename: F
authors.initials: F
authors.lastname: Kainer
mesh_terms: D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D007744:Obstetric Labor Complications / Q000000981:diagnostic imaging*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000379:methods*