RT Journal Article SR Electronic T1 Assessment of aortic stenosis severity: when the gradient does not fit with the valve area JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1431 OP 1433 DO 10.1136/hrt.2010.195149 VO 96 IS 18 A1 Pibarot, Philippe A1 Dumesnil, Jean G YR 2010 UL http://heart.bmj.com/content/96/18/1431.abstract AB