A comparative immunohistochemical study of HBsAg, HBcAg and CD57 in chronic hepatitis B pediatric patients with and without malignant disorders - DİNİZ, Gülden; AKTAŞ, Safiye; ORTAÇ, Ragıp; ÜNLÜ, İsmet; VERGİN, Canan (Turkish Journal of Gastroenterology, 2003)