Health expenditure and economic growth in South-South Geopolitical Zone of Nigeria. Multi-disciplinary Journal of Research and Development Perspectives, [S. l.], v. 12, n. 1, p. 87–100, 2026. Disponível em: https://mjrdp-unical.org.ng/index.php/home/article/view/60. Acesso em: 15 may. 2026.