TÜRKDOĞAN, M. Kürşat; TESTERECİ, Haluk; KAHRAMAN, Tahir; TUNCER, İlyas; ALGÜN, Ekrem; YÖRÜK, İbrahim H. Serum and tissue levels of vitamin A and E gastric and esophageal cancer. Turkish Journal of Gastroenterology, [S. l.], v. 7, n. 4, p. 327–330, 1996. Disponível em: https://www.turkjgastroenterol.org/index.php/tjg/article/view/740. Acesso em: 1 jan. 2026.