Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) The Asymptomatic Carotid Atherosclerosis Study Group,Study design for randomized proapective trial of carotid endarterectomy for asymptomatic atherosclerosis.,Stroke,,,1989,20,,844-849,https://cir.nii.ac.jp/crid/1570572699419420288,