title: Letter: Catecholamine excretion levels in neuroblastoma.
mesh_terms: D002395:Catecholamines / Q000652:urine*; D006801:Humans; D009447:Neuroblastoma / Q000652:urine*; D014642:Vanilmandelic Acid / Q000652:urine*
chemical_list: D002395:Catecholamines; D014642:Vanilmandelic Acid