Socio-demographic correlates of perception and awareness of out-of-pocket health expenditures among household heads in gwagwalada area council, abuja, nigeria. World Journal of Current Medical and Pharmaceutical Research, India, v. 7, n. 2, 2025. DOI: 10.37022/wjcmpr.v7i2.365. Disponível em: https://www.wjcmpr.org/index.php/journal/article/view/365. Acesso em: 27 jan. 2026.