Role of Thymidine Phosphorylase(TP), Dihydropyrimidine Dehydrogenase(DPD)and Thymidylate synthase(TS)for Predicting the Prognosis and Therapeutic Effects of Doxifluridine, An Intermediate form of Capecitabine, in adjuvant therapy for postoperative Node positive colorectal cancer(DukesC); Findings f

Interventions: chemotherapy(Doxifluridine:5’-DFUR)
Primary outcome(s): Disease-free survival
Study Design: Single arm Non-randomized