PT - JOURNAL ARTICLE ED - , TI - Jill Cook AID - 10.1136/bjsm.2006.031971 DP - 2007 Jun 01 TA - British Journal of Sports Medicine PG - 348--348 VI - 41 IP - 6 4099 - http://bjsm.bmj.com/content/41/6/348.short 4100 - http://bjsm.bmj.com/content/41/6/348.full SO - Br J Sports Med2007 Jun 01; 41