Clinico-pathologic characteristics for patients in the different groups.

€Cases excluded due to background stains. p-values: Difference in group composition compared to the validation set; by Pearsons Chi-square exact test; Linear-by-linear association exact test (p-values marked with £); t-tests (p-values marked with τ).*Other histologic types and unknown or unrelated causes of death were not included in the significance test.