Tascón Acevedo, Natalia María, and Alejandro Vélez Hoyos. 2005. “Anaplastic Thyroid cancer.Percutaneus Fine-Needle Aspiration Biopsy for the Diagnosis”. Medicina UPB 23 (1): 61-69. https://revistas.upb.edu.co/index.php/medicina/article/view/2778.