title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span>independent <span  title="" class="an ">&ensp;</span>populations <span  title="" class="an ">&ensp;</span>of <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HCN</span><span  title="" class="an ">&ensp;</span>and <span  title="" class="an ">&ensp;</span><span  title="CAP" class="an CAP">HCN</span><span  title="" class="an ">&ensp;</span>homomers <span  title="" class="an ">&ensp;</span>These <span  title=