title: RE: Primary Tumor Location as a Prognostic Factor in Metastatic  Colorectal Cancer.
authors.forename: Wen-zhuo
authors.initials: WZ
authors.lastname: He
authors.forename: Liang-ping
authors.initials: LP
authors.lastname: Xia
mesh_terms: D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use*; D015179:Colorectal Neoplasms / Q000401:mortality* / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male