Arslan, E., Aykan, M. B. and Sağlam, K. (2016) “Comment on ‘The relationship of recurrent aphthous stomatitis and Helicobacter pylori, cytokine gene polymorphism and cobalamin’”, Turkish Journal of Gastroenterology, 27(1), pp. 87–87. doi: 10.5152/tjg.2015.150438.