RT Journal Article SR Electronic T1 The measurement of health related quality of life JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 331 OP 332 DO 10.1136/hrt.81.4.331 VO 81 IS 4 A1 TOM TREASURE YR 1999 UL http://heart.bmj.com/content/81/4/331.abstract AB