Frequency of HBsAg/anti-HCV seropositivity and its relationship with risk factors in extrahepatic malignancies - OKAN, Abdullah; OKAN, İnci; AKAR, Servet; ELLİDOKUZ, Ender; AKBAYLAR, Hale; ŞEKEROĞLU, Ramazan; AKMAN, Fadime; BACAKSIZ, Fatma; TANKURT, Ethem; ŞİMŞEK, İlkay; GÖNEN, Ömür (Turkish Journal of Gastroenterology, 1998)