Hepatitis B and C virus in West-Central Turkey: Seroprevalence in healthy individuals admitted to a university hospital for routine health checks - DEMİRTÜRK, Neşe and DEMİRDAL, Tuna and TOPRAK, Dilek and ALTINDİŞ, Mustafa and AKTEPE, Orhan Cem (Turkish Journal of Gastroenterology, 2006)