Correction to: Nature Communications https://doi.org/10.1038/s41467-018-07915-2, published online 10 January 2019.

The original version of this Article contained an error in Fig. 5, in which the key labels for the lines representing ‘Inside concession’ and ‘Outside concession’ were mislabelled. The correct version of Fig. 5 is:

which replaces the previous incorrect version:

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