THE UTILITY OF HEALTHCARE SYSTEM BEFORE AND DURING THE COVID-19 PANDEMIC. MEDIS – International Journal of Medical Sciences and Research, [S. l.], v. 2, n. 4, p. 55–59, 2023. DOI: 10.35120/medisij020455n. Disponível em: https://medisij.com/index.php/mij/article/view/120. Acesso em: 17 oct. 2026.