Zahrul Azhar, Citra Tri Widyastuti, K. Khotimah, Mukhamad Rajin, Diah Ayu Fatmawati, and Herin Mawarti, “RELATIONSHIP OF COMMORBID DISEASE TO MORTALITY EVENTS IN COVID-19 PATIENTS”, IJSS, vol. 1, no. 2, pp. 135–142, Feb. 2023.