REFERENCES 1. Young JL Jr, Miller RW. Incidence of malignant tumors in U. S. children. J Pediatr 1975;86:254-8. 2. Pui CH, Relling MV, Downing JR. Acute lymphoblastic leukemia. N Engl J Med 2004;350:1535-48. 3. Jonsson OG, Sartain P, Ducore JM, Buchanan GR. Bone pain as an initial symptom of childhood acute lymphoblastic leukemia: association with nearly normal hematologic indexes. J Pediatr 19...