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Anencephaly in Japan: paternal age, maternal age and birth order

โœ Scribed by YOKO IMAIZUMI


Book ID
115248805
Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
496 KB
Volume
42
Category
Article
ISSN
0003-4800

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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