Correction to: British Journal of Cancer (2017) 117, 734–743; doi:10.1038/bjc.2017.231; published online 01 August 2017
Since the publication of this paper, the authors have noticed that Sarah Stewart-Brown was linked to an incorrect affiliation. She should have been linked to affiliation 2, which is as follows:
Division of Health Sciences, Warwick Medical School, University of Warwick, Coventry CV4 7AL, UK