RT Journal Article SR Electronic T1 Management of asymptomatic aortic stenosis: masterly inactivity but cat-like observation. JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 215 OP 217 DO 10.1136/hrt.78.3.215 VO 78 IS 3 A1 Vaile, J. C. A1 Griffith, M. J. YR 1997 UL http://heart.bmj.com/content/78/3/215.abstract AB