Erratum

The original article [1] contained an error in Fig. 1 mistakenly carried forward by the Production team handling this article whereby the values denoting the 95% Confidence Intervals in the uppermost table had been omitted.

Fig. 1
figure 1

Kaplan-Meier analysis of RFS (top), DMFS (middle), and OS (bottom) by GEP class. Significant separation of class 1 and class 2 risk (p < 0.0001) is observed for each endpoint. Solid line: class 1; dashed line: 2

This error has now been corrected and the values returned.