Amira A. M. Salih, et al. “Assessing the Private Sector and Civil Society Engagement in Poliomyelitis Myelitis Vaccination Among Internally Displaced People in Khartoum State, 2019”. Public Health , vol. 6, no. 2, Sept. 2025, pp. 54-61, http://openventio.us/index.php/PHOJ/article/view/626.