Regional differences in COVID-19 attack and case fatality rates in the first quarter of 2020: a comparative study. IMC Journal of Medical Science, [S. l.], v. 14, n. 2, p. 1–10, 2021. DOI: 10.3329/imcjms.v14i2.52825. Disponível em: https://banglajol.info/index.php/IMCJMS/article/view/52825. Acesso em: 23 jun. 2026.