Mongolism, delayed fertilization and human sexual behaviour
German, J.
Nature 217(5128): 516-518
1968
ISSN/ISBN: 0028-0836 PMID: 4230506 DOI: 10.1038/217516a0Document Number: 517314
Decreasing frequency of coitus accompanying advancing age and prolongation of marriage, predisposing to delayed fertilization, may explain the correlation of increased incidence of mongol births with advancing maternal age.
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