title: Methotrexate therapy and nitrous oxide anesthesia.
mesh_terms: D000768:Anesthesia, General; D002648:Child; D002675:Child, Preschool; D004347:Drug Interactions; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage; D008727:Methotrexate / Q000008:administration & dosage / Q000009:adverse effects* / Q000627:therapeutic use; D009369:Neoplasms / Q000188:drug therapy*; D009609:Nitrous Oxide / Q000009:adverse effects*
chemical_list: D009609:Nitrous Oxide; D002955:Leucovorin; D008727:Methotrexate