title: Pretreatment clinical morbidity as an index of the biologic potential of acute lymphoblastic leukaemia of childhood.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007945:Leukemia, Lymphoid / Q000145:classification* / Q000401:mortality / Q000628:therapy; D007958:Leukocyte Count; D009017:Morbidity; D011379:Prognosis