Infectious aetiology of childhood leukaemia.
D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004739:England; D006801:Humans; D007223:Infant; D007239:Infections / Q000150:complications*; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000209:etiology* / Q000401:mortality; D012111:Residence Characteristics; D012423:Rural Health; D014852:Wales