Correction to: Cell Research advance online publication 19 May 2017; doi:10.1038/cr.2017.75

During web production, there is an error in the web site for the DOI of this Research Highlight. The DOI is 10.1038/cr.2017.75, not 10.1038/cr.2017.71. The pdf file is correct.

We apologize for any inconvenience that may have been caused by our error.