PT - JOURNAL ARTICLE ED - , TI - EDITORIAL AID - 10.1136/bjsm.11.1.2 DP - 1977 Apr 01 TA - British Journal of Sports Medicine PG - 2--3 VI - 11 IP - 1 4099 - http://bjsm.bmj.com/content/11/1/2.short 4100 - http://bjsm.bmj.com/content/11/1/2.full SO - Br J Sports Med1977 Apr 01; 11