Zubair, Muhammad, Zahid Mahmood Anjum, Sadia Zafar, Muhammad Shamaoon, and Ghulam Raza Balouch. 2010. “Frequency of Hepatitis B Virus Infection Among Children With Chronic Liver Disease”. Annals of Punjab Medical College 4 (1), 49-52. https://doi.org/10.29054/apmc/2010.667.