Bochwal, Nagwa .R., et al. “Statistical Study on the Effect of Covid-19 on Patients With Chronic Diseases and Role of Radiological Diagnosis in Tobruk City ”. Tobruk University Journal of Medical Sciences, vol. 3, no. 1, Nov. 2021, pp. 40-54, https://doi.org/10.64516/rn06as88.