Erratum

Unfortunately the original version of this article [1] contained a mistake. It came to the authors’ attention that the corresponding authors of the article were not listed correctly, an error which arose during production. Both Yong-Yong Shi (yongyongshi@gmail.com) and Chang-Gui Li (licgqd@163.com) should have been listed as joint corresponding authors.

The full author list should read:

Zhao-Wei Zhou1,2, Ling-Ling Cui1,2, Lin Han1,2, Can Wang1,2, Zhi-Jian Song3, Jia-Wei Shen3, Zhi-Qiang Li3, Jian-Hua Chen3, Zu-Jia Wen3, Xiao-Min Wang1,2, Yong-Yong Shi3*and Chang-Gui Li1,2*

*Corresponding authors: Chang-Gui Li licgqd@163.com and Yong-Yong Shi yongyongshi@gmail.com.