Hakan BOZKAYA, et al. “Relationship Between Mutations in the Pre-Core Core Promoter Region and HBe Antigen Status in Patients With Chronic HBV Infection”. Turkish Journal of Gastroenterology, vol. 8, no. 3, July 2019, pp. 277-82, https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/1291.