TY - JOUR T1 - Comment JF - British Heart Journal JO - Heart SP - 277 LP - 278 DO - 10.1136/hrt.70.3.277 VL - 70 IS - 3 A2 - Mills, Peter Davies, Michael Y1 - 1993/09/01 UR - http://heart.bmj.com/content/70/3/277.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -