Nogodalla MA, Abdelghani AI. Impact of Staff Qualification and Training on Performance of the Core Function Activities (CFA) of the Communicable Disease Surveillance System, Gazera State, Sudan, 2009. OJPHI [Internet]. 2014 Mar. 9 [cited 2024 Apr. 16];6(1). Available from: https://ojphi.org/ojs/index.php/ojphi/article/view/5113