Shokeralla AA, Qurashi ME, Mekki RY, Ali MS. The Effect of Symptoms on the Survival Time of Coronavirus Patients in the Sudanese Population. ijsmr [Internet]. 2023 Dec. 19 [cited 2024 May 19];12:249-56. Available from: https://www.lifescienceglobal.com/pms/index.php/ijsmr/article/view/9411