RT Journal Article SR Electronic T1 The electrocardiogram is a more sensitive indicator than echocardiography of hypertrophic cardiomyopathy in families with a mutation in the MYH7 gene JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 497 OP 497 DO 10.1136/hrt.72.5.497 VO 72 IS 5 YR 1994 UL http://heart.bmj.com/content/72/5/497.abstract AB