TY - JOUR T1 - Discussion JF - British Journal of Sports Medicine JO - Br J Sports Med SP - 162 LP - 162 DO - 10.1136/bjsm.10.3.162 VL - 10 IS - 3 A2 - , Y1 - 1976/10/01 UR - http://bjsm.bmj.com/content/10/3/162.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -