Yavuz Beyazıt, et al. “Serum Total Antioxidant Capacity to Discriminate Benign from Malignant Causes of Biliary Obstruction”. Turkish Journal of Gastroenterology, vol. 25, no. 5, July 2019, pp. 592-3, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/3037.