importFrom(survival, Surv)

importFrom(stats, .getXlevels, add.scope, as.formula, coef,
           drop.scope, formula, model.extract, model.matrix,
           model.response, nlm, pchisq, pnorm, predict, 
           printCoefmat, rnorm, terms, update, vcov)

S3method(predict, mpr)
S3method(print, mpr)
S3method(print, summary.mpr)
S3method(summary, mpr)
S3method(update, mpr)
S3method(vcov, mpr)

export(addterm, dropterm, extractIC, mpr, stepmpr)