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. 1980 Nov 8;281(6250):1253. doi: 10.1136/bmj.281.6250.1253

Ultrasound evidence of sexual difference in fetal size in first trimester.

PMCID: PMC1714654 PMID: 7427655

1253

Selected References

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

Campbell S. An improved method of fetal cephalometry by ultrasound. J Obstet Gynaecol Br Commonw. 1968 May;75(5):568–576. doi: 10.1111/j.1471-0528.1968.tb00161.x. [DOI] [PubMed] [Google Scholar]
Robinson H. P. Sonar measurement of fetal crown-rump length as means of assessing maturity in first trimester of pregnancy. Br Med J. 1973 Oct 6;4(5883):28–31. doi: 10.1136/bmj.4.5883.28. [DOI] [PMC free article] [PubMed] [Google Scholar]

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