TY - JOUR T1 - ABSTRACTS OF CARDIOLOGY JF - British Heart Journal JO - Heart SP - 474 LP - 477 DO - 10.1136/hrt.16.4.474 VL - 16 IS - 4 A2 - , Y1 - 1954/10/01 UR - http://heart.bmj.com/content/16/4/474.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -