Ojewumi, Titus Kolawole. “Individual and Systemic Factors of Under-Five Mortality in Nigeria: A Cox Proportional Hazard Model”. Macro Management & Public Policies 5, no. 3 (September 30, 2023): 16–33. Accessed April 3, 2025. https://journals.bilpubgroup.com/index.php/mmpp/article/view/5735.