Thanawut, Sarawut, Yongyut Sirivatanauksorn, and Chanin Limwongs. 2006. “Factor V Leiden and Prothrombin Gene Mutation in Deep Vein Thrombosis”. The Thai Journal of Surgery 27 (1):11-14. https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/242045.