DEMİR, Süleyman, Mustafa YILMAZ, Mehmet KÖSEOĞLU, Nalan AKALIN, and Diler ASLAN. 2003. “Role of Free Radicals in Peptic Ulcer and Gastritis”. Turkish Journal of Gastroenterology 14 (1):39-43. https://www.turkjgastroenterol.org/index.php/tjg/article/view/1234.