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