title: Letter: Are T-cell malignancies more frequent in younger children?
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007945:Leukemia, Lymphoid / Q000453:epidemiology*; D008297:Male; D013601:T-Lymphocytes; D014481:United States