Postlumbar puncture headache in pediatric oncology patients.
D000293:Adolescent; D000367:Age Factors; D000775:Anesthesia, Spinal / Q000009:adverse effects; D002648:Child; D002675:Child, Preschool; D006261:Headache / Q000209:etiology*; D006801:Humans; D007427:Intracranial Pressure; D007938:Leukemia / Q000150:complications; D013129:Spinal Puncture / Q000009:adverse effects*