Hasan , A. S. (2019) “Prevalence of Antibodies to Hepatitis B Virus Antigens and Occult Hepatitis B Virus Infection in Blood Donors”, Diyala Journal of Medicine, 3(1), pp. 57–61. Available at: https://djm.uodiyala.edu.iq/index.php/djm/article/view/429 (Accessed: 22 October 2025).