TY - JOUR T1 - EDITORIAL JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 314 LP - 314 DO - 10.1136/bjsm.7.3-4.314 VL - 7 IS - 3-4 A2 - , Y1 - 1973/12/01 UR - http://bjsm.bmj.com/content/7/3-4/314.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -