Morbidity pattern among national health insurance enrollees attending the primary care clinic of a tertiary hospital in northwestern Nigeria. Pyramid Journal of Medicine, [S. l.], v. 9, n. 1, 2026. DOI: 10.4081/pjm.2026.552. Disponível em: https://africa.pagepress.net/pjm/article/view/552. Acesso em: 25 may. 2026.