title: Failure of moderate-dose prolonged-infusion methotrexate and citrovorum factor rescue in patients with previously treated metastatic neuroblastoma--a phase II study.
mesh_terms: D002648:Child; D002986:Clinical Trials as Topic; D006801:Humans; D007263:Infusions, Parenteral; D002955:Leucovorin / Q000008:administration & dosage*; D008727:Methotrexate / Q000008:administration & dosage*; D009362:Neoplasm Metastasis; D009447:Neuroblastoma / Q000188:drug therapy*
chemical_list: D002955:Leucovorin; D008727:Methotrexate