Hussen, S. ., and T. . Shimelis. “Prevalence of Hepatitis B Virus Infection and Associated Risk Factors Among Pregnant Women Attending Antenatal Care Clinics in Kofele Town, Oromia Region, Ethiopia”. Journal of Science and Development, vol. 4, no. 1, Jan. 2016, pp. 45-52, https://journals.hu.edu.et/hu-journals/index.php/agvs/article/view/93.