The Effect of Symptoms on the Survival Time of Coronavirus Patients in the Sudanese Population. International Journal of Statistics in Medical Research, [S. l.], v. 12, p. 249–256, 2023. DOI: 10.6000/1929-6029.2023.12.29. Disponível em: https://neolifescience.com/index.php/ijsmr/article/view/9411. Acesso em: 15 jan. 2026.