Different height-for-age references for boys (A) and girls (B): Dutch 2009 [6], Dutch Turks 2009, Turkish Turks in Ankara 2006 [22], Dutch Turks 1997 [3], and WHO 2007 [21].

<p>Different height-for-age references for boys (A) and girls (B): Dutch 2009 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124686#pone.0124686.ref006" target="_blank">6</a>], Dutch Turks 2009, Turkish Turks in Ankara 2006 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124686#pone.0124686.ref022" target="_blank">22</a>], Dutch Turks 1997 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124686#pone.0124686.ref003" target="_blank">3</a>], and WHO 2007 [<a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0124686#pone.0124686.ref021" target="_blank">21</a>].</p>