O Piiroinen. Show Affiliations »
Abstract
Mesh: See more » Abortion, ThreatenedEchocardiographyFemaleFetal Heart/physiologyHumansMethodsPregnancyPrenatal DiagnosisTime FactorsUltrasonography
Year: 1973 PMID: 4125032 DOI: 10.1016/s0140-6736(73)92113-2
Source DB: PubMed Journal: Lancet ISSN: 0140-6736 Impact factor: 79.321