heba khaled, “Association of Ferritin and HbA1c with Disease Severity in COVID-19 Patients”, Al-Bayan J. Med. Health Sci., vol. 4, no. 1, Dec. 2025, Accessed: Dec. 29, 2025. [Online]. Available: https://abjmhs.albayan.edu.iq/index.php/abjmhs/article/view/59