MAHMUD, M. Prevalence of mortality among covid-19 patients in Kurdistan Region and various parts of the world and the role of ecological and environmental factors in shaping SARS-CoV-2 virulence. Polytechnic Journal, [S. l.], v. 12, n. 1, p. 141-148, 2023. DOI: 10.25156/ptj.v12n1y2022.pp141-148. Disponível em: https://journals.epu.edu.iq/index.php/polytechnic/article/view/836. Acesso em: 6 may. 2024.