Abdel-Hamid, Mohamed, Yasmin Saad Ibrahim, Doha El-Sayed Ellakwa, and Shahenda Nasr Ahmed. 2016. “Association of Serum Neopterin Level With HCV Infection Among Egyptian Blood Donors”. PSM Biological Research 1 (1), 39-42. https://journals.psmpublishers.org/index.php/biolres/article/view/22.