Hagan, Oheneba C.K., Paul Nsiah, Dorcas Obiri-Yeboah, Felix Yirdong, Isaac Annan, Sebastian Eliason, and Samuel V. Nuvor. 2018. “Impact of Universal Childhood Vaccination Against Hepatitis B in Ghana: A Pilot Study”. Journal of Public Health in Africa 9 (2). https://doi.org/10.4081/jphia.2018.721.