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Calibration curves and DCA for survival prediction of patients with surgery on primary tumor. a Calibration curves of 12-, 24-, and 36-months in the training cohort, b Calibration curves of 12-, 24-, and 36-months in the validation cohort, c DCA of 12-, 24-, and 36-months in the training cohort, d DCA of 12-, 24-, and 36-months in the validation cohort. DCA: Decision curve analysis
