RT Journal Article SR Electronic T1 Nitrates and severe aortic stenosis. JF British Heart Journal JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 586 OP 586 DO 10.1136/hrt.73.6.586 VO 73 IS 6 A1 G. Y. Lip A1 S. P. Singh YR 1995 UL http://heart.bmj.com/content/73/6/586.abstract AB