RT Journal Article SR Electronic T1 Detecting occult cardiac disease in athletes: history that makes a difference 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 669 OP 669 DO 10.1136/bjsports-2013-092494 VO 47 IS 11 A1 Irfan M Asif A1 Jonathan A Drezner YR 2013 UL http://bjsm.bmj.com/content/47/11/669.abstract AB