title: Reclassification of low-gradient aortic stenosis severity in patients with preserved ejection fraction: when is severe truly severe?
authors.affiliation: Department of Cardiology, Bern University Hospital, Switzerland.
authors.forename: Crochan J
authors.initials: CJ
authors.lastname: O'Sullivan
authors.affiliation: Department of Cardiology, Bern University Hospital, Switzerland peter.wenaweser@insel.ch.
authors.forename: Peter
authors.initials: P
authors.lastname: Wenaweser