E C Coles, D G Altman, H B Meire, P Farrant. Show Affiliations »
Abstract
Mesh: See more » FemaleGestational AgeHumansMenstruationPregnancyTime FactorsUltrasonography
Year: 1979 PMID: 445105 PMCID: PMC1598890 DOI: 10.1136/bmj.1.6175.1422-b
Source DB: PubMed Journal: Br Med J ISSN: 0007-1447