cd.sm.uncured           Smoothed cross-validation conditional density
                        estimator of the susceptible population
cd.uncured              Cross-validation conditional density of the
                        susceptible population
fun.opt                 Objective function
k.epa                   Rescaled Epanechnikov kernel
kNN.Mahalanobis         K Nearest Neighbors with Mahalanobis Distance
loglik.simcm            Logarithm of the likelihood of a single-index
                        mixture cure model
probcure.sm             Smoothed version of the nonparametric estimator
                        of the conditional probability of cure
sicure.f                Estimation of the vector of parameters in a
                        single-index mixture cure model with a
                        functional covariate
sicure.v                Estimation of the vector of parameters in a
                        single-index mixture cure model with a vector
                        of covariates
sicure.vf               Estimation of the vector of parameters in a
                        single-index mixture cure model with a vector
                        and a functional covariate
