RT Journal Article SR Electronic T1 Sporting longevity. 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 136 OP 137 DO 10.1136/bjsm.13.3.136 VO 13 IS 3 A1 P. P. de Oliveira YR 1979 UL http://bjsm.bmj.com/content/13/3/136.abstract AB