PT - JOURNAL ARTICLE ED - , TI - WEB TOP 10 DP - 2007 Apr 01 TA - Heart PG - 418--418 VI - 93 IP - 4 4099 - http://heart.bmj.com/content/93/4/418.short 4100 - http://heart.bmj.com/content/93/4/418.full SO - Heart2007 Apr 01; 93