hsaft                   Function to implement the horseshoe shrinkage
                        prior in Bayesian survival regression
hsaftallcorr            This function extends the main function 'hsaft'
                        to create correlation among covariates.
hsaftcovariatecorr      This function extends the main function 'hsaft'
                        to create correlation among covariates.
hsaftgroupcorr          This function extends the main function 'hsaft'
                        to create correlation among groups.
