Zhang, Kui
Dong, Xiao-ai
Fan, Fei
Deng, Zhen-hua
Article History
Received: 19 December 2015
Accepted: 2 May 2016
First Online: 12 May 2016
Change Date: 5 December 2017
Change Type: Correction
Change Details: The original version of this article unfortunately contained a mistake in the Results section. The correct equation from the cubic regression analysis for male is: Age = 14.408 + 0.475X-0.064X<sup>2</sup> + 0.005X<sup>3</sup>, and for the female is: 18.196–1.637X + 0.204X<sup>2</sup>–0.005X<sup>3</sup>. The error doesn’t affect the main conclusion.
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.