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. 1998 Oct 3;317(7163):923-4.
doi: 10.1136/bmj.317.7163.923.

Effect of parity, gravidity, previous miscarriage, and age on risk of Down's syndrome: population based study

Affiliations

Effect of parity, gravidity, previous miscarriage, and age on risk of Down's syndrome: population based study

A Chan et al. BMJ. .
No abstract available

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References

    1. Schimmel MS, Eidelman AI, Zadka P, Kornbluth E, Hammerman C. Increased parity and risk of trisomy 21: review of 37 110 live births [with commentary by R Lilford] BMJ. 1997;314:720–721. - PMC - PubMed
    1. McCullagh P, Nelder JA. Generalised linear models. 2nd ed. London: Chapman and Hall; 1989.
    1. SAS Institute. SAS/STAT Software: The GENMOD procedure, release 6.09. Cary, NC: SAS Institute; 1993.
    1. Halliday J, Lumley J, Watson L. Comparison of women who do and do not have amniocentesis or chorionic villus sampling. Lancet. 1995;345:704–709. - PubMed