TÖRÜNER, Murat, et al. “Factor V Leiden, Prothrombin G20210A and MTHFR Gene Mutations in Inflammatory Bowel Disease”. Turkish Journal of Gastroenterology, vol. 15, no. 4, Jan. 2004, pp. 250-2, https://turkjgastroenterol.org/index.php/tjg/article/view/1391.