RT Journal Article SR Electronic T1 More research is needed into the effects on injury of substitute and interchange rules in team sports 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 694 OP 695 DO 10.1136/bjsports-2011-090470 VO 46 IS 10 A1 John Orchard YR 2012 UL http://bjsm.bmj.com/content/46/10/694.abstract AB