Decline in U.S. Childhood leukaemia mortality.
D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007938:Leukemia / Q000401:mortality*; D007953:Leukemia, Radiation-Induced / Q000517:prevention & control; D014481:United States