RT Journal Article SR Electronic T1 Contributions to Sports Medicine Journals 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 40 OP 40 DO 10.1136/bjsm.10.1.40 VO 10 IS 1 A1 John P. Jesse YR 1976 UL http://bjsm.bmj.com/content/10/1/40.abstract AB