Health Outcomes and Economic Productivity in Nigeria: Short Run Evidence from OLS–HAC Estimation. Singaporean Journal of Business Economics and Management, [S. l.], v. 12, n. 3, p. 99–101, 2026. Disponível em: http://www.singaporeanjbem.com/index.php/SJBEM/article/view/608. Acesso em: 24 jun. 2026.