RT Journal Article SR Electronic T1 Pathogenesis of aortic stenosis and its relation to age. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 569 OP 574 DO 10.1136/hrt.34.6.569 VO 34 IS 6 A1 Pomerance, A YR 1972 UL http://heart.bmj.com/content/34/6/569.abstract AB