TY - JOUR T1 - BASIL T. PARSONS-SMITH JF - British Heart Journal JO - Heart SP - 262 LP - 263 DO - 10.1136/hrt.17.2.262 VL - 17 IS - 2 AU - William Evans Y1 - 1955/04/01 UR - http://heart.bmj.com/content/17/2/262.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -