Feizi-Khankandi, I., Reza-zadeh, A., Feizi, F., & Seyed-hatami, E. (2017). Comparison of Helicobacter pylori infection frequency in the cardia and distal esophageal cancer patients with healthy individuals. International Journal of Advances in Medicine, 3(2), 419–423. https://doi.org/10.18203/2349-3933.ijam20161103