Isam M Elkhidir, Hiba Dirar, Mustafa EM Yassin, Khalid A. Enan, Mohammed Nafi, Walid A Eldaif. 2013. “SERO-PREVALENCE OF HEPATITIS B VIRUS (HBsAg) AND HEPATITIS C VIRUS (Anti-HCV) AMONG HIV-INFECTED IN SUDAN”. Journal of Biomedical and Pharmaceutical Research 2 (6). http://jbpr.in/index.php/jbpr/article/view/344.