a: Unadjsuted Kaplan Meier estimates of disease-free survival according to high (above the median) or low (below the median) GDF-15 levels
b: Unadjsuted Kaplan Meier estimates of disease-free survival according to high (above the median) or low (below the median) galectin-3 levels
c: Unadjsuted Kaplan Meier estimates of disease-free survival according to high (above the median) or low (below the median) sST2 levels