RT Journal Article SR Electronic T1 VENTRICULAR HYPERTROPHY AND THE ELECTRICAL AXIS OF THE QRS COMPLEX IN INFANCY JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 139 OP 143 DO 10.1136/hrt.24.2.139 VO 24 IS 2 A1 Eric N. Coleman YR 1962 UL http://heart.bmj.com/content/24/2/139.abstract AB