A. Mahmoud Abdeen, T. . Essawy, and S. S. . Mohammed, “Effect of Sofosbuvir Administration and Its Withdrawal on the Submandibular Salivary Gland of Adult Male Albino Rats: A Histological and Ultra-Structural Study”, Open Access Maced J Med Sci, vol. 7, no. 23, pp. 4101–4109, Dec. 2019.