M. Kürşat TÜRKDOĞAN (2019) “Serum and tissue levels of vitamin A and E gastric and esophageal cancer”, Turkish Journal of Gastroenterology, 7(4), pp. 327–330. Available at: https://tjg.avesjournals.com/index.php/tjg/article/view/1174 (Accessed: 24 July 2025).