๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

BIRTH RANK AND MATERNAL AGE

โœ Scribed by Loxton, G.E.


Book ID
123045365
Publisher
The Lancet
Year
1962
Tongue
English
Weight
166 KB
Volume
279
Category
Article
ISSN
0140-6736

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Down syndrome, paternal age, maternal ag
โœ J. DAVID ERICKSON ๐Ÿ“‚ Article ๐Ÿ“… 1978 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 595 KB

## SUMMARY Recent cytogenetic evidence has shown that trisomy 21 can arise, perhaps even in substantial proportion, from paternal nondisjunction. The statistical association between Down syndrome incidence and maternal age, paternal age and birth order has been studied in a sample of over 4000 case