Scientific Reports 5: Article number: 11246; published online: 18 June 2015; updated: 03 August 2015

In the original version of this Article, the affiliations for Zhen Jin and Yong-Ping Wu were incorrectly listed as ‘College of Physics Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225002, P.R. China’ and ‘Complex Systems Research Center, Shanxi University, Taiyuan, Shanxi 030006, P.R. China’, respectively. The correct affiliations are listed below.

Zhen Jin

Complex Systems Research Center, Shanxi University, Taiyuan, Shanxi 030006, P.R. China

Yong-Ping Wu

College of Physics Science and Technology, Yangzhou University, Yangzhou, Jiangsu Province, 225002, P.R. China

These errors have now been corrected in both the HTML and PDF versions of the Article.