title: Down syndrome: immunologic and epidemiologic associations-enigmas remain.
authors.forename: Steven D
authors.initials: SD
authors.lastname: Douglas
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004314:Down Syndrome / Q000453:epidemiology* / Q000235:genetics / Q000276:immunology*; D006801:Humans; D007223:Infant; D016131:Lymphocyte Subsets / Q000378:metabolism*; D008231:Lymphopenia / Q000453:epidemiology* / Q000235:genetics; D009426:Netherlands / Q000453:epidemiology; D012306:Risk; D018805:Sepsis / Q000276:immunology / Q000401:mortality