title: Birth incidence of Down syndrome.
authors.forename: W C
authors.initials: WC
authors.lastname: Cooley
mesh_terms: D004314:Down Syndrome / Q000201:enzymology / Q000453:epidemiology*; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D012178:Retinopathy of Prematurity / Q000453:epidemiology; D013482:Superoxide Dismutase / Q000378:metabolism; D014481:United States / Q000453:epidemiology
chemical_list: D013482:Superoxide Dismutase