title: Combination of methotrexate and external irradiation in advanced cancer patients.
mesh_terms: D000328:Adult; D000368:Aged; D001773:Blood Cells / Q000528:radiation effects; D003037:Cobalt Radioisotopes; D006801:Humans; D002955:Leucovorin / Q000627:therapeutic use; D008727:Methotrexate / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D008875:Middle Aged; D009055:Mouth / Q000528:radiation effects; D009369:Neoplasms / Q000188:drug therapy / Q000532:radiotherapy / Q000628:therapy*; D011867:Radioisotope Teletherapy / Q000009:adverse effects
chemical_list: D003037:Cobalt Radioisotopes; D002955:Leucovorin; D008727:Methotrexate