Endoscopic banding ligation compared with sclerotherapy for the treatment of espohageal varices - DOBRUCALI, Ahmet; BAL, Kadir; TUNCER, Murat; İLKOVA, Feryal; ÇELİK, Aykut; UZUNİSMAİL, Hülya; YURDAKUL, İbrahim; OKTAY, Ergun (Turkish Journal of Gastroenterology, 1998)