RT Journal Article SR Electronic T1 Surgery of valve disease: late results and late complications JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 715 OP 721 DO 10.1136/heart.86.6.715 VO 86 IS 6 A1 Groves, Peter YR 2001 UL http://heart.bmj.com/content/86/6/715.abstract AB