RT Journal Article SR Electronic T1 ABSTRACTS IN ECHOCARDIOGRAPHY JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 45 OP 48 DO 10.1136/hrt.75.6_Suppl_2.45 VO 75 IS 6 Suppl 2 YR 1996 UL http://heart.bmj.com/content/75/6_Suppl_2/45.abstract AB