Piłka, Nina, and Mateusz Drabczyk. “A Calcitonin Secreting Pancreatic Neuroendocrine Tumor With Liver Metastasis and Hepatic Vein Thrombosis: A Case Report”. Quality in Sport, vol. 35, Nov. 2024, p. 55771, doi:10.12775/QS.2024.35.55771.