Seasonality in Down syndrome.
D000328:Adult; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000453:epidemiology* / Q000209:etiology; D004739:England; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008423:Maternal Age; D012621:Seasons