PT - JOURNAL ARTICLE ED - , TI - Correction AID - 10.1136/bjsports-2011-090197corr1 DP - 2011 Nov 01 TA - British Journal of Sports Medicine PG - e4--e4 VI - 45 IP - 14 4099 - http://bjsm.bmj.com/content/45/14/e4.short 4100 - http://bjsm.bmj.com/content/45/14/e4.full SO - Br J Sports Med2011 Nov 01; 45