[The influence of the paternal age on the occurrence of Down's syndrome].
D000328:Adult; D004314:Down Syndrome / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008423:Maternal Age; D008875:Middle Aged; D010331:Paternal Age; D012189:Retrospective Studies
Influenza dell'età paterna sull'incidenza della sindrome di Down.