THE CORRELATION OF ENDOSCOPIC AND ULTRASONOGRAPHIC FINDINGS IN PATIENTS WITH PORTAL HYPERTENSION - ONAT, Osman; SERHATLIOĞLU, Selami; DEMİR, Ali; DÖNDER, Emir; AYHAN, Oğuz; ÖZERCAN, Reşat; YILDIRIM, Ahmet (Turkish Journal of Gastroenterology, 1993)