Anamika Vyas, Ramavtar Saini, and Pooja Gangrade. 2012. “Prevalence of Hepatitis B Surface Antigen (HBsAg) Among HIV Seropositive Patients”. Journal of Basic & Applied Sciences 8 (1):243-46. https://doi.org/10.6000/1927-5129.2012.08.01.37.