Relationship between helicobacter pylori infection and nonsteroidal anti-inflammatory drug-induced gastroduodenal mucosal injury - BAĞCI, Sait; ÇAKIRBAY, Haşim; DEMİRİZ, Murat; GÜLŞEN, Mustafa; KARALAR, Mehmet; ARPACIOĞLU, Oktay; ALPER, Ahmet (Turkish Journal of Gastroenterology, 1995)