RT Journal Article SR Electronic T1 Cardiac surgery in the elderly JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 119 OP 120 DO 10.1136/hrt.82.2.119 VO 82 IS 2 A1 HARRIS, J YR 1999 UL http://heart.bmj.com/content/82/2/119.abstract AB