ted model and calculate
     the estimated error terms and EBLUPs.</p></li>
<li><p>Rescale the error terms and EBLUPs so that the empirical variance of
     these quantities is equal to estimated variance components from the model.</p></li>
<li><p>Sample independently with replacement from the rescaled estimated error 
     terms and rescaled EBLUPs.</p></li>
<li><p>Obtain bootstrap samples by combining the samples via the fitted model equation.</p></li>
<li><p>Refit the model and extract the statistic(s) o