PT - JOURNAL ARTICLE AU - Grant Freckleton AU - Tania Pizzari TI - Risk factors for hamstring muscle strain injury in sport: a systematic review and meta-analysis AID - 10.1136/bjsports-2011-090664 DP - 2013 Apr 01 TA - British Journal of Sports Medicine PG - 351--358 VI - 47 IP - 6 4099 - http://bjsm.bmj.com/content/47/6/351.short 4100 - http://bjsm.bmj.com/content/47/6/351.full SO - Br J Sports Med2013 Apr 01; 47