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letter

. 1994 Feb 12;308(6926):471. doi: 10.1136/bmj.308.6926.471

Prenatal screening for trisomy 18. Should not be attempted.

PMCID: PMC2539554 PMID: 8124188

471

Selected References

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

Cuckle H., Nanchahal K., Wald N. Birth prevalence of Down's syndrome in England and Wales. Prenat Diagn. 1991 Jan;11(1):29–34. doi: 10.1002/pd.1970110106. [DOI] [PubMed] [Google Scholar]
Spencer K., Mallard A. S., Coombes E. J., Macri J. N. Prenatal screening for trisomy 18 with free beta human chorionic gonadotrophin as a marker. BMJ. 1993 Dec 4;307(6917):1455–1458. doi: 10.1136/bmj.307.6917.1455. [DOI] [PMC free article] [PubMed] [Google Scholar]

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