Amarttayakong, Pattama, Parichat Prajaney, Sitthichai Iamsaard, Waranon Munkong, and Sukrit Sangkhano. 2018. “The Association Between Circle of Willis Patterns and Ruptured Aneurysm Sites”. Srinagarind Medical Journal 33 (4):314-19. https://li01.tci-thaijo.org/index.php/SRIMEDJ/article/view/130016.