Evaluation of the outcome of interferon therapy in chronic hepatitis B infection - ÇAYLAN, Rahmet; AYDIN, Kemalettin; KÖKSAL, İftihar and ÖKSÜZ, Recep and KOSTAKOĞLU, Uğur and ÇOBANOĞLU, Ümit and ARI, Nurucihan and AYDIN, Sevim (Turkish Journal of Gastroenterology, 1999)