P Pystynen, P Ylöstalo, A Ojala. Show Affiliations »
Abstract
Mesh: See more » Biomedical EngineeringFemaleFetal HeartGestational AgeHumansMethodsPregnancyPregnancy Complications/diagnosisTime FactorsUltrasonics/instrumentationUltrasonography
Year: 1968 PMID: 5731338
Source DB: PubMed Journal: Ann Chir Gynaecol Fenn ISSN: 0003-3855