Wang, Liping, Fangzheng Han, Hualing Duan, Fang Ji, Xuebing Yan, Yuchen Fan, and Kai Wang. “Hepatitis B Virus Pre-Existing Drug Resistant Mutation Is Related to the Genotype and Disease Progression”. The Journal of Infection in Developing Countries 11, no. 09 (September 30, 2017): 727-732. Accessed March 2, 2021. https://jidc.org/index.php/journal/article/view/31600164.