PT - JOURNAL ARTICLE ED - , TI - Proceedings of the British Cardiac Society AID - 10.1136/hrt.48.1.87 DP - 1982 Jul 01 TA - British Heart Journal PG - 87--96 VI - 48 IP - 1 4099 - http://heart.bmj.com/content/48/1/87.short 4100 - http://heart.bmj.com/content/48/1/87.full SO - Heart1982 Jul 01; 48