title: Letter by Layland et al regarding article, "Validation of intravascular ultrasound-derived parameters with fractional flow reserve for assessment of coronary stenosis severity".
authors.forename: Jamie
authors.initials: J
authors.lastname: Layland
authors.forename: Andrew
authors.initials: A
authors.lastname: Wilson
authors.forename: Robert
authors.initials: R
authors.lastname: Whitbourn
authors.forename: Andrew
authors.initials: A
authors.lastname: MacIsaac
mesh_terms: D023921:Coronary Stenosis / Q000000981:diagnostic imaging*; D005260:Female; D053805:Fractional Flow Reserve, Myocardial; D006801:Humans; D008297:Male; D018084:Ultrasonography, Interventional