title: Letter: Should ineffective agents be used in combination chemotherapy?
mesh_terms: D000970:Antineoplastic Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D004359:Drug Therapy, Combination; D006801:Humans; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000175:diagnosis / Q000188:drug therapy* / Q000601:surgery; D013997:Time Factors
chemical_list: D000970:Antineoplastic Agents