Statistical methods.
Continuous variables are shown as Mean ± SD or as Median [IQR] as
appropriate, while discrete variable as n(%). Comparison of continuous
variables was preformed using Mann-Whitney U test, while comparison of
discrete variables using Fisher’s exact test. Event free survival was
assed using Kaplan-Mayer curves, statistical significance of the
difference between curves was assessed using a log-rank test. Results
were considered significant when p<0.05. All calculations were
done using R version 3.5.0, R Foundation for Statistical Computing,
Vienna, Austria.