Nature Communications 8: Article number: 15983 (2017); Published: 17 July 2017; Updated: 26 October 2017

In this Article, there are errors in the labelling of the y axis in Fig. 1a and Supplementary Fig. 1b. The labels ‘20’, ‘40’, ‘60’, ‘80’ and ‘100’ should have been ‘0.5’, ‘1.0’ and ‘1.5’ in Fig. 1a and the labels ‘50’, ‘100’, ‘150’ and ‘200’ should have been ‘1’, ‘2’ and ‘3’ in Supplementary Fig. 1b. The correct versions of these figures appear below as Figs 1 and Figs 2, respectively.

Figure 1
figure 1

Figure 2
figure 2