Zubair, M., Z. M. Anjum, S. Zafar, M. Shamaoon, and G. R. Balouch. “Frequency of Hepatitis B Virus Infection Among Children With Chronic Liver Disease”. Annals of Punjab Medical College, Vol. 4, no. 1, June 2010, pp. 49-52, doi:10.29054/apmc/2010.667.