RT Journal Article SR Electronic T1 EDITORIAL JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 314 OP 314 DO 10.1136/bjsm.7.3-4.314 VO 7 IS 3-4 YR 1973 UL http://bjsm.bmj.com/content/7/3-4/314.abstract AB