[This corrects the article DOI: 10.1186/s12998-016-0096-9.].
Crothers, Amy L French, Simon D Hebert, Jeff J Walker, Bruce F eng Published Erratum England Chiropr Man Therap. 2016 Jul 11;24:31. doi: 10.1186/s12998-016-0111-1. eCollection 2016.
https://www.ncbi.nlm.nih.gov/pubmed/27403282