DEMİRTÜRK, Neşe, et al. “Hepatitis B and C Virus in West-Central Turkey: Seroprevalence in Healthy Individuals Admitted to a University Hospital for Routine Health Checks”. Turkish Journal of Gastroenterology, vol. 17, no. 4, Jan. 2006, pp. 267-72, https://turkjgastroenterol.org/index.php/tjg/article/view/1545.