Süleyman Sayar, et al. “Risk of Hepatitis B Reactivation During Anti-TNF Therapy; Evaluation of Patients With past Hepatitis B Infection”. Turkish Journal of Gastroenterology, vol. 31, no. 7, Apr. 2020, pp. 522-8, https://tjg.avesjournals.com/index.php/tjg/article/view/3912.