Comparison of the China and WHO head circumference-for-age SD curves for girls. Xin-Nan Zong Hui Li 10.1371/journal.pone.0059569.g007 https://plos.figshare.com/articles/figure/_Comparison_of_the_China_and_WHO_head_circumference_for_age_SD_curves_for_girls_/655892 <p>Comparison of the China and WHO head circumference-for-age SD curves for girls.</p> 2013-03-20 13:12:36 china circumference-for-age sd curves