Tümay, V., & Guner, O. S. (2020). The utility and prognostic value of CA 19-9 and CEA serum markers in the long-term follow up of patients with colorectal cancer. A single-center experience over 13 years. Annali Italiani Di Chirurgia, 91(5), 494–503. Retrieved from https://annaliitalianidichirurgia.it/index.php/aic/article/view/2481