DEĞERTEKİN, Halil, Alpaslan TUZCU, and Kendal YALÇIN. 2000. “Horizontal Transmission of HBV Among Students in the Southeastern Anatolia”. Turkish Journal of Gastroenterology 11 (2):117-20. https://turkjgastroenterol.org/index.php/tjg/article/view/1055.