PT - JOURNAL ARTICLE ED - , TI - eHEART: <a href="http://www.heartjnl.com"> <em>www.heartjnl.com</em> </a> AID - 10.1136/heart.83.1.90 DP - 2000 Jan 01 TA - Heart PG - 90--90 VI - 83 IP - 1 4099 - http://heart.bmj.com/content/83/1/90.short 4100 - http://heart.bmj.com/content/83/1/90.full SO - Heart2000 Jan 01; 83