Aya S. Ahmed, Eman S. Wanasi, Khadiga Eltegani, Islam Ahmed, and Abdalla O. Elkhawad, “Evaluate the Effect of Covid-19 on the Availability and Access to Medication: A Study Influenced the Adherence of Chronic Medications among Patients in the Khartoum Locality”, ACPR-V2, pp. 49–62, Nov. 2023.