Goyal P, Mortada R, Ebrahem R, Kadhem S. CEA as a Marker for Medullary Thyroid Carcinoma in a Patient with Colorectal Cancer. kjm [Internet]. 2019 Jan. 8 [cited 2024 May 4];9(4):109-10. Available from: https://journals.ku.edu/kjm/article/view/8630