coprimary-package       Sample size calculation for two primary
                        time-to-event endpoints in phase III clinical
                        trials
datacheck               check the consistency of the parameters
nbevent                 Number of events estimates
ncoprimary              Sample size calculation in clinical trials with
                        two co-primary time-to-event endpoints
nsurvival               Sample size calculation in clinical trials with
                        one primary survival endpoint
probafix                Probabitility of event when the follow-up is
                        fixed
probanofix              Probabitility of event when the follow-up is no
                        fixed
