RT Journal Article SR Electronic T1 Should we forget about valve area when assessing aortic stenosis? JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 92 OP 93 DO 10.1136/heartjnl-2018-313666 VO 105 IS 2 A1 Helmut Baumgartner YR 2019 UL http://heart.bmj.com/content/105/2/92.abstract AB