TY - JOUR T1 - EDITORIAL JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 150 LP - 151 DO - 10.1136/bjsm.17.3.150 VL - 17 IS - 3 A2 - , Y1 - 1983/09/01 UR - http://bjsm.bmj.com/content/17/3/150.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -