The efficacy of two-week therapy with ranitidine bismuth citrate, amoxicillin and clarithromycin on Helicobacter pylori eradication in clarithromycinresistant and- sensitive cases - AYDIN, Ahmet; ÖNDER, Göktuğ F.; AKARCA, Ulus S.; TEKİN, Fatih and TUNÇYÜREK, Müge and MUSOĞLU, Ahmet (Turkish Journal of Gastroenterology, 2005)