TY - JOUR T1 - EDITORIAL JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 168 LP - 169 DO - 10.1136/bjsm.14.4.168 VL - 14 IS - 4 A2 - , Y1 - 1980/12/01 UR - http://bjsm.bmj.com/content/14/4/168.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -