Fig. 6
![Fig. 6](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13018-019-1225-7/MediaObjects/13018_2019_1225_Fig6_HTML.png)
Hazard ratios from multivariable Cox regression analyses for prediction of disease-specific mortality with the number of years survived stratified according to surgical therapy (surgery not performed is the reference)
Hazard ratios from multivariable Cox regression analyses for prediction of disease-specific mortality with the number of years survived stratified according to surgical therapy (surgery not performed is the reference)