RT Journal Article SR Electronic T1 Unstable carotid plaque JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1189 OP 1189 VO 166 IS 9 A1 J. David Spence A1 Arturo Tamayo A1 Maria DiCicco YR 2002 UL http://www.cmaj.ca/content/166/9/1189.abstract