inter_bch               Fits promotion time cure rate model for
                        interval censored data
inter_frailty           Fits cure rate frailty model for interval
                        censored data
inter_frailty_cl        Cure rate frailty model for interval censored
                        clustered data
intercure               intercure: Cure rate regression models for
                        interval censored data.
sim_bch                 Generates a interval censored dataset using
                        promotion time cure rate model
sim_frailty             Generates a interval censored dataset using
                        frailty cure rate model
sim_frailty_cl          Generates a interval censored clustered dataset
                        using frailty cure rate model
