smoothSurvReg.fit(x, z, y, offset = NULL, correctlik, init, controlvals, common.logscale)Surv for details.beta, scale, ccoef
giving the initial values for the fitting process.smoothSurvReg.control.regres, spline, loglik, aic,
degree.smooth, var, var2, dCdC,
iter, estimated, warning, fail, H, I, G, U.