Correction to: Palgrave Communications (2016) 2, Article number: 16084 doi: 10.1057/palcomms.2016.84; Published 22 November 2016; Updated 5 December 2016

The correct URL for the dataset hosted at Dataverse that is associated with this work has been added to the ‘Data availability’ section. This dataset can be accessed at http://dx.doi.org/10.7910/DVN/GMIXKB.

The article has been corrected online.