Seroprevalence of hepatitis B and C viruses in the province of Tokat in the Black Sea region of Turkey: A population-based study - , Beytullah YILDIRIM, Şener BARUT, Yunus BULUT, Gülgün YENİŞEHİRLİ and , Metin ÖZDEMİR and; han ÇETİN and; AKBAŞ and; ATIŞ and; yin ÖZYURT and; ettin ŞAHİN (Turkish Journal of Gastroenterology 1, 2019)