Kendal YALÇIN, et al. “Determination of Serum Hepatitis B Virus DNA in Chronic HBsAg Carriers: Clinical Significance and Correlation With Serological Markers”. Turkish Journal of Gastroenterology, vol. 14, no. 3, July 2019, pp. 157-63, https://tjg.avesjournals.com/index.php/tjg/article/view/1852.