VAİRA, D. (2000) “The clinical role of stool test (HpSA) in noninvasive diagnosis of Helicobacter pylori infection”, Turkish Journal of Gastroenterology, 11(2), pp. 97–102. Available at: https://turkjgastroenterol.org/index.php/tjg/article/view/1068 (Accessed: 1 January 2026).