Rerkasem, Kittipan, Patric J Gallagher, Robert F Grimble, and Clifford P Shearman. 2011. “The Relationship Between Carotid Plaque Calcification and Stability”. The Thai Journal of Surgery 32 (4). https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/227309.