C Smith, C A Gregori, J L Breen. Show Affiliations »
Abstract
Mesh： See more » Abortion, Spontaneous/epidemiologyAbortion, Threatened/diagnosisEmbryo ImplantationFemaleHumansPlacenta Previa/epidemiologyPregnancyUltrasonography
Year: 1978 PMID： 622231
Source DB: PubMed Journal: Obstet Gynecol ISSN： 0029-7844 Impact factor: 7.661