Dirican, Abuzer, Bulent Unal, Burak Isik, Fatih Sumer, Cuneyt Kayaalp, and Ilhan Aslan. “Corelation Between Preoperative Serum CEA, CA19-9, and AFP Levels and Clinicopathologic Factors”. Annals of Medical Research 15, no. 4 (May 25, 2021): 0233–0237. Accessed December 22, 2024. http://annalsmedres.org/index.php/aomr/article/view/3294.