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. 2013 Dec 18;7:875. doi: 10.3389/fnhum.2013.00875

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Copyright © 2013 Takeuchi, Taki, Sekiguchi, Nouchi, Kotozaki, Nakagawa, Miyauchi, Iizuka, Yokoyama, Shinada, Yamamoto, Hanawa, Araki, Hashizume, Kunitoki, Sassa and Kawashima.

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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Histograms of the variables. (A) A histogram showing the logarithms of hair iron levels for male and female subjects. (B) A histogram showing S-A creativity test scores for male and female subjects.