Almahdawi, Musaab A., Mahmood K. Saleh, and Safaa A. A. Al-Waysi. “Genetic Variability of the S Gene of Chronic Hepatitis B Virus in Baghdad”. International journal of health sciences 6, no. S3 (April 17, 2022): 3699–3714. Accessed May 11, 2026. https://sciencescholar.us/journal/index.php/ijhs/article/view/6157.