USLU, Ezel, et al. “KOLOREKTAL KANSERDE METASTAZIN SERUM TOTAL SİYALİK ASİT DÜZEYLERİ ÜZERİNE ETKİSİ”. Cerrahpaşa Medical Journal, vol. 31, no. 4, Nov. 2019, pp. 231-4, https://cerrahpasamedj.org/index.php/pub/article/view/98.