„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), pp. 043–047. Disponibil la: https://www.ojshostng.com/index.php/njphysiologicalsciences/article/view/1851 (Data accesării: 6 aprilie 2026).