title: Second-line option for colorectal cancer.
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D015179:Colorectal Neoplasms / Q000188:drug therapy* / Q000401:mortality / Q000473:pathology; D006801:Humans; D019233:Retreatment; D016896:Treatment Outcome