Nature Communications 8: Article number: 13937 (2017); Published 18 January 2017; Updated 21 March 2017

The Author Mi Yan was incorrectly omitted from the list of corresponding Authors in the PDF of this Article, and the author Tianyu Ma was incorrectly listed as a corresponding author; the HTML version of the paper was correct from the time of publication. The correct information for correspondence is: ‘Correspondence and requests for materials should be addressed to X.R. ren.xiaobing@nims.go.jp) or to M.Y. mse_yanmi@zju.edu.cn).’