Seasonality and maternal age in Down syndrome.
D000309:Adrenal Insufficiency / Q000150:complications; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008423:Maternal Age; D010063:Ovum / Q000473:pathology; D012621:Seasons