RT Journal Article SR Electronic T1 Commotio cordis 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 236 OP 237 DO 10.1136/bjsm.36.4.236 VO 36 IS 4 A1 P McCrory YR 2002 UL http://bjsm.bmj.com/content/36/4/236.abstract AB This article has been retracted. See the retraction notice for details. The PDF is retained for transparency.