ÜNSAL, Belkıs, Kadir AKSÖZ, N. EKİNCİ, Nafi YAZICIOĞLU, and Sadun KOŞAY. 2020. “Gastric Metaplasia and Helicobacter Pylori Prevalance in Patients With Duodenal Ulcer”. Turkish Journal of Gastroenterology 6 (1):119-20. https://turkjgastroenterol.avesjournals.com/index.php/tjg/article/view/455.