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Forest plot based on survival outcomes. (a) Disease-free survival (DFS) in oxaliplatin/fluorouracil- (OX/FU-) based group versus fluorouracil- (FU-) based group; (b) DFS in chemotherapy group versus observation group; (c) overall survival (OS) in chemotherapy group versus observation group; (d) OS in OX/FU-based group versus FU-based group.
