B Backe, J Nakling. Show Affiliations »
Abstract
Mesh: See more » FemaleGestational AgeHumansMenstruationPregnancySensitivity and SpecificityUltrasonography, Prenatal/standards
Year: 1998 PMID: 9883931 DOI: 10.1111/j.1471-0528.1998.tb10018.x
Source DB: PubMed Journal: Br J Obstet Gynaecol ISSN: 0306-5456