After the publication of this work [1] it was noticed that there were typographical errors in the following equations: equation 5 in column 2, equation 7 in column 2, equation 8 in column 1.

The bracket was placed incorrectly, so it should read:

\log_2 (Y_{gij} + 0.5) rather thank (\log_2 Y_{gij} + 0.5)

The publisher apologizes for this error.