M. E. DOLAR, Y. ACAR, B. ATEŞ, M. E. CANER, and B. ŞAHİN, “HEPATITIS C VIRUS ANTIBODY PREVALENCE IN CHRONIC LIVER DISEASES AND SOME RISK GROUPS”, Turkish Journal of Gastroenterology, vol. 3, no. 4, pp. 643–646, Jan. 1992.