RT Journal Article SR Electronic T1 The cardiomyopathies: an overview JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 469 OP 474 DO 10.1136/heart.83.4.469 VO 83 IS 4 A1 M J Davies YR 2000 UL http://heart.bmj.com/content/83/4/469.abstract AB