RT Journal Article SR Electronic T1 EFFECT OF HYPERTENSION ON THE P WAVE OF THE ELECTROCARDIOGRAM JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 460 OP 464 DO 10.1136/hrt.25.4.460 VO 25 IS 4 A1 Ross, G. YR 1963 UL http://heart.bmj.com/content/25/4/460.abstract AB