doi:10.1017/S0963180114000048, Published by Cambridge University Press, 17 July 2014
Due to a printer's error, M. Patrick Moore, Jr.'s name was changed to M. P. Moore, Jr. in proofs and appeared as such in the version of the article by Paris et al.Footnote 1 published online ahead of print on July 17, 2014. The error was discovered on the day of online publication and the author's correct name was reinstated. We regret the error.