Allergy in Negro children. II. Incidence in two population groups in Washington, D. C.
D000293:Adolescent; D001741:Black or African American; D002648:Child; D002675:Child, Preschool; D004219:District of Columbia; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000453:epidemiology*; D007223:Infant; D008297:Male