title: [New possibilities and challenges of ultrasonography investigation during pregnancy].
authors.affiliation: OYS:n synnytys- ja naistentautien klinikka 90220 Oulu. pentti.jouppila@cc.oulu.fi
authors.forename: P
authors.initials: P
authors.lastname: Jouppila
mesh_terms: D005260:Female; D006801:Humans; D009774:Obstetrics / Q000592:standards*; D011247:Pregnancy; D016216:Ultrasonography, Prenatal / Q000295:instrumentation / Q000639:trends*