title: Proceedings of the Osteosarcoma Study Group Meeting (Bethesda, Maryland, January 19, 1977): introduction: treatment of osteogenic sarcoma.
mesh_terms: D006801:Humans; D008727:Methotrexate / Q000627:therapeutic use; D012516:Osteosarcoma / Q000188:drug therapy*
chemical_list: D008727:Methotrexate