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. 2017 Sep 14;8:697. doi: 10.3389/fphys.2017.00697

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Copyright © 2017 Wei, Thomas, Hatch, Hu and Liu.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Proportional changes of craniofacial skeletal growth during postnatal development. (A) Ratio of three dimensions in cranial region. (B) Ratio of three dimensions in facial region. (C) Ratio between cranium and face in length, width, and height. ^*Represents significant change between indicated data point and immediate earlier time point; ^#Represents significant change between indicated data points (Tukey's multiple comparison test, p < 0.05).