BeggC                   C-statistic by Begg et al.
GHCI                    Gonen and Heller's Concordance Index for Cox
                        models
IntAUC                  Integration of time-dependent AUC curves
R2_type_Coef            R2-type Coefficients for Cox proportional
                        hazards models
UnoC                    C-statistic by Uno et al.
plot_survAUC_survErr    Plot method for survAUC and survErr Objects
predErr                 Distance-based estimators of survival
                        predictive accuracy
schemper                Distance-based estimator of survival predictive
                        accuracy proposed by Schemper and Henderson
survAUC_ChamDiao        AUC estimator proposed by Chambless and Diao
survAUC_HungChiang      AUC estimator proposed by Hung and Chiang
survAUC_SongZhou        AUC estimator proposed by Song and Zhou
survAUC_Uno             AUC estimator proposed by Uno et al.
