frailtypack_frailtyPenal          frailtyPenal Frailty model. 
frailtypack_GenfrailtyPenal       Generalized shared and joint frailty models. 
frailtypack_additivePenal         additivePenal Frailty model. 
frailtypack_nestedPenal	          nestedPenal Frailty model.
frailtypack_jointPenal            jointPenal Frailty model.
frailtypack_multivPenal           multivPenal Frailty model.
frailtypack_jointSurroPenal       One-step joint surrogate model for the validation of surrogate endpoints with time-to-event endpoints. 
frailtypack_jointSurroPenalSimul  Simulation studies for the one-step joint surrogate model.
