Before revision:  The test statistic has an asymptotically pivotal distribution (a student t-distribution with K-1 degrees of freedom) , which makes our procedure very easy to implement .
After revision:  The test statistic has an asymptotically pivotal distribution (a student t-distribution . Our procedure only requires consistent (in \ell_2-norm) estimation of the parameters, which can be verified for many popular estimators. The proposed method is easy to implement .