Coefficients for significant models from Table 2.

<p>In parentheses standard error of coefficient. Student t-test and <i>P</i>-values correspond to hypotheses test of the estimated coefficients (df = 57, 4).</p><p>Coefficients for significant models from <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0106897#pone-0106897-t002" target="_blank">Table 2</a>.