Kutjok, PHILIP, and SIMON NYICAR. “ Prevalence of COVID – 19 Infection and Associated Risk Factors Among Travelers at Medblue Modern Laboratories Center, Juba, South Sudan”. IJRDO-Journal of Applied Science 7, no. 10 (October 24, 2021): 01-06. Accessed December 28, 2024. http://cpcalendars.ijrdo.org/index.php/as/article/view/4646.