ATANIYAZOVA, Oral A. COVID-19: High Risk Groups for COVID-19 and Challenges for Medical Universities. Asian Pacific Journal of Environment and Cancer, [S. l.], v. 3, n. S1, p. 21–23, 2020. DOI: 10.31557/apjec.2020.3.S1.21-23. Disponível em: https://www.waocp.com/journal/index.php/apjec/article/view/447. Acesso em: 5 jun. 2026.