TÜRKDOĞAN, M. K., TESTERECİ, H., KAHRAMAN, T., TUNCER, İlyas, ALGÜN, E., & YÖRÜK, İbrahim H. (1996). Serum and tissue levels of vitamin A and E gastric and esophageal cancer. Turkish Journal of Gastroenterology, 7(4), 327–330. Retrieved from https://www.turkjgastroenterol.org/index.php/tjg/article/view/740