The problem of iron deficiency anemia in preschool Negro children.
D001741:Black or African American; D000747:Anemia, Hypochromic / Q000453:epidemiology* / Q000517:prevention & control; D002648:Child; D002675:Child, Preschool; D004219:District of Columbia; D006400:Hematocrit; D006452:Hemoglobinometry; D006801:Humans; D007223:Infant; D007501:Iron / Q000627:therapeutic use
D007501:Iron