Correction to: Palgrave Communications (2016) 2, Article number: 16019. doi: 10.1057/palcomms.2016.19; Published 10 May 2016; Updated 7 June 2016

The middle initial “E” was previously omitted from Michael Alfaro’s name in the author list. This has now been added and reads “Michael E Alfaro”.

Erik Gjesfjeld and Michael Alfaro were not previously listed as co-corresponding authors as they should have been. This has now been indicated.

The article has been corrected online.