„Frequency of Hepatitis B and C Co-Infection in Chronic Liver Disease Patients in Calabar, Cross River State, Nigeria“ (2021) Nigerian Journal of Physiological Sciences, 31(1), str. 043–047. Dostopno na: https://ojshostng.com/index.php/njphysiologicalsciences/article/view/1851 (Pridobljeno: 25 junij 2026).