TY - JOUR T1 - WITHDRAWN JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 671 LP - 671 DO - 10.1136/bjsports-2014-093494.298 VL - 48 IS - 7 A2 - , Y1 - 2014/04/01 UR - http://bjsm.bmj.com/content/48/7/671.3.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -