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