Desalegn, Zelalem, and Solomon Gebre Selassie. “Prevalence of Hepatitis B Surface Antigen (HBsAg) Among Health Professionals in Public Hospitals in Addis Ababa, Ethiopia”. The Ethiopian Journal of Health Development 27, no. 1 (September 29, 2016). Accessed April 25, 2024. https://ejhd.org/index.php/ejhd/article/view/314.