Kamran, Sultan Mehmood, et al. “FREQUENCY OF HBV INFECTION AND ITS RISK FACTORS IN ASYMPTOMATIC MILITARY PERSONNELS: Frequency of HBV Infection and Its Risk Factors”. Pakistan Armed Forces Medical Journal, vol. 66, no. 4, Aug. 2016, pp. 543-47, https://pafmj.org/PAFMJ/article/view/762.