G. DİNİZ, S. AKTAŞ, R. ORTAÇ, İsmet ÜNLÜ, and C. VERGİN, “A comparative immunohistochemical study of HBsAg, HBcAg and CD57 in chronic hepatitis B pediatric patients with and without malignant disorders”, Turkish Journal of Gastroenterology, vol. 14, no. 4, pp. 234–238, Jan. 2003.