The role of ultrasonography in the diagnosis of peptic ulcers - KÜÇÜKTERZİ, Vildan; KARAMAN, Z. Can; ÖZEK, Taner; ŞENER, Nüvit; KÜÇÜKYILMAZ, Hayati; ERYILMAZ, Zeki; TAMAÇ, Nevin I. (Turkish Journal of Gastroenterology, 1995)