PT - JOURNAL ARTICLE ED - , TI - WEB TOP 10 AID - 10.1136/heart.89.4.426 DP - 2003 Apr 01 TA - Heart PG - 426--426 VI - 89 IP - 4 4099 - http://heart.bmj.com/content/89/4/426.1.short 4100 - http://heart.bmj.com/content/89/4/426.1.full SO - Heart2003 Apr 01; 89