RT Journal Article SR Electronic T1 THE EFFECT OF VALVOTOMY ON THE MURMURS OF PULMONARY AND AORTIC STENOSIS JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 523 OP 528 DO 10.1136/hrt.20.4.523 VO 20 IS 4 A1 Wells, Bertrand G. YR 1958 UL http://heart.bmj.com/content/20/4/523.abstract AB