[Trisomy 21: maternal age and other risk factors].
Vekemans
M
M
Service de cytogénétique, Hôpital Necker-enfants malades, Paris.
D004314:Down Syndrome / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D006801:Humans; D008423:Maternal Age; D011247:Pregnancy; D012307:Risk Factors