Rahmi Aslan, et al. “Biologic Therapy Carries a Very Low Risk of Reactivation in Hepatitis B Surface Antigen-Negative Phase of Hepatitis B”. Turkish Journal of Gastroenterology, vol. 34, no. 2, Feb. 2023, pp. 156-60, https://tjg.avesjournals.com/index.php/tjg/article/view/4394.