EVALUATION OF 419 PEPTIC ULCER PATIENTS REFERRED WITH BLEEDING AND NON BLEEDING - ÖZDEN, Ali; DÖNDERİCİ, Ömer and SAMUR, Mustafa and DUMLU, Şükrü and BEYLER, Ali Reşit and UZUNALİMOĞLU, Özden (Turkish Journal of Gastroenterology, 1993)