Kumar, S., P. Sayal, D. Budhani, and S. Kumar. “Seropositivity of Hepatitis B Surface Antigen in Tertiary Care Centre: Issues & Considerations”. International Journal of Medical Research and Review, Vol. 4, no. 10, Oct. 2016, pp. 1756-60, doi:10.17511/ijmrr.2016.i10.07.