title: Methotrexate as adjuvant treatment for primary osteosarcoma.
mesh_terms: D001859:Bone Neoplasms / Q000601:surgery / Q000628:therapy*; D002986:Clinical Trials as Topic; D006801:Humans; D008727:Methotrexate / Q000008:administration & dosage*; D012516:Osteosarcoma / Q000601:surgery / Q000628:therapy*; D011182:Postoperative Care
chemical_list: D008727:Methotrexate