Doğan, Ümit Bilge, et al. “A Case of Entecavir Resistance Which Is Developed After Complete Viral Suppression During Entecavir Treatment for Nucleoside-Naive Chronic Hepatitis B”. Turkish Journal of Gastroenterology, vol. 25, no. 1, Jan. 2014, pp. 206-9, doi:10.5152/tjg.2014.3605.