[Clinical study of leukemia in children].
D002644:Chickenpox / Q000150:complications; D002648:Child; D002675:Child, Preschool; D003581:Cytodiagnosis; D005260:Female; D006801:Humans; D007223:Infant; D007938:Leukemia / Q000150:complications / Q000175:diagnosis / Q000628:therapy; D008297:Male; D008578:Meninges; D008854:Microscopy, Electron; D011379:Prognosis