Orhan ÖZGÜR, Gürden GÜR, Mete ÖZDOĞAN, and Sedat BOYACIOĞLU, “The role of gastric juice ammonia and gastric huice urea nitrogen/ammonia in the diagnosis of Helicobacter pylori infection”, Turkish Journal of Gastroenterology, vol. 9, no. 2, pp. 133–137, Jul. 2019.