URLDate
Verified		Extra Software
Requirements
(if any)		Access
Conditions		Notes
http://dx.doi.org/10.1136/bjsports-2011-090634DOI Link
http://bjsm.bmj.com/content/46/1/11.full10/20/2014
http://bjsm.bmj.com/content/46/1/11.full.pdf10/20/2014PDF Reader