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. 1991 Apr 20;302(6782):965. doi: 10.1136/bmj.302.6782.965-a

Estimations of gestational age and screening for Down's syndrome.

PMCID: PMC1669476 PMID: 1827744

965

Selected References

These references are in PubMed. This may not be the complete list of references from this article.

Bennett M. J., Little G., Dewhurst J., Chamberlain G. Predictive value of ultrasound measurement in early pregnancy: a randomized controlled trial. Br J Obstet Gynaecol. 1982 May;89(5):338–341. doi: 10.1111/j.1471-0528.1982.tb05074.x. [DOI] [PubMed] [Google Scholar]
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