RT Journal Article SR Electronic T1 Echocardiography 1995 JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP i3 OP i3 DO 10.1136/hrt.73.5_Suppl_2.i3 VO 73 IS 5 Suppl 2 A1 M J Monaghan A1 P Nihoyannopoulos YR 1995 UL http://heart.bmj.com/content/73/5_Suppl_2/i3.abstract AB