PT - JOURNAL ARTICLE AU - L Engebretsen AU - R Bahr TI - An ounce of prevention? AID - 10.1136/bjsm.2005.018333 DP - 2005 Jun 01 TA - British Journal of Sports Medicine PG - 312--313 VI - 39 IP - 6 4099 - http://bjsm.bmj.com/content/39/6/312.short 4100 - http://bjsm.bmj.com/content/39/6/312.full SO - Br J Sports Med2005 Jun 01; 39