Scientific Reports 6: Article number: 36210; published online: 26 October 2016; updated: 21 November 2016.

The original version of this Article contained an error in the spelling of the author An Qin, which was incorrectly given as Qin An.

This has now been corrected in the PDF and HTML versions of the Article.

The Author Contributions Statement,

Conception and design: V.K., S.M.C., Z.Y., Y.Q., Q.A. and J.X. Acquisition and analysis of data: V.K., S.M.C., Z.Y., S.T.C., Y.Q., X.L., Q.A. and J.X. Drafting manuscript: V.K., S.M.C., Z.Y. and J.X. Revising manuscript: V.K., S.M.C., Z.Y., S.Z., H.X., Y.Q., Q.A., J.T., W.E., V.R. and J.X.

now reads:

Conception and design: V.K., S.M.C., Z.Y., Y.Q., A.Q. and J.X. Acquisition and analysis of data: V.K., S.M.C., Z.Y., S.T.C., Y.Q., X.L., A.Q. and J.X. Drafting manuscript: V.K., S.M.C., Z.Y. and J.X. Revising manuscript: V.K., S.M.C., Z.Y., S.Z., H.X., Y.Q., A.Q., J.T., W.E., V.R. and J.X.