10.1371/journal.pone.0059569.g006 Xin-Nan Zong Xin-Nan Zong Hui Li Hui Li Comparison of the China and WHO head circumference-for-age SD curves for boys. Public Library of Science 2013 china circumference-for-age sd curves 2013-03-20 13:11:50 Figure https://plos.figshare.com/articles/figure/_Comparison_of_the_China_and_WHO_head_circumference_for_age_SD_curves_for_boys_/655891 <p>Comparison of the China and WHO head circumference-for-age SD curves for boys.</p>