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ROC curve of (a) Rad-score (training cohort), (b) Rad-score (validation cohort), (c) Rad-score + age (training cohort), (d) Rad-score + age (validation cohort), (e) Rad-score + COMET classification (training cohort), (f) Rad-score + COMET classification (validation cohort) * colored area = 95% CI (confidence interval).
