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Comment
. 1997 Jun 14;314(7096):1760-1.
doi: 10.1136/bmj.314.7096.1760a.

Increased parity and risk of trisomy 21. Study measured prevalence of Down's syndrome at birth, not incidence

P O Pharoah
Comment

Increased parity and risk of trisomy 21. Study measured prevalence of Down's syndrome at birth, not incidence

P O Pharoah. BMJ. .
No abstract available

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