title: Letter by Wong and Poon regarding article, "Does impaired cerebrovascular reactivity predict stroke risk in asymptomatic carotid stenosis? A prospective substudy of the Asymptomatic Carotid Emboli Study (ACES)".
authors.forename: George Kwok-Chu
authors.initials: GK
authors.lastname: Wong
authors.forename: Wai Sang
authors.initials: WS
authors.lastname: Poon
mesh_terms: D002339:Carotid Arteries / Q000503:physiopathology*; D016893:Carotid Stenosis / Q000150:complications*; D002560:Cerebrovascular Circulation / Q000502:physiology*; D006801:Humans; D008297:Male; D020521:Stroke / Q000209:etiology*