The Relationship between Healthcare Expenditure and Economic Growth In the Gulf Cooperation Council Countries (GCC): An Applied study using Co-integration Test and Causality. The Arab Journal of Administration, Cairo, v. 41, n. 2, p. 323–335, 2021. DOI: 10.21608/aja.2021.66590.1063. Disponível em: https://ajajournal.org/index.php/aja/article/view/305. Acesso em: 12 jun. 2026.