AISHA, P. U.; UMAR, N. A. An Impact Assessment of National Health Insurance Scheme (NHIS) On Employees’ Productivity in Adamawa State, Nigeria. International Journal of Economics Development Research (IJEDR), [S. l.], v. 2, n. 1, p. 1–15, 2021. DOI: 10.37385/ijedr.v2i1.200. Disponível em: https://yrpipku.com/journal/index.php/ijedr/article/view/200. Acesso em: 5 jul. 2025.