Procalcitonin as an Alternative Tumor Marker of Medullary Thyroid Carcinoma
Luca Giovanella, Maria Luisa Garo, Luca Ceriani, Gaetano Paone, Alfredo Campenni’, Federica D’Aurizio
The Journal of Clinical Endocrinology & Metabolism, Volume 106, Issue 12, December 2021, Pages 3634–3643, 
DOI: https://doi.org/10.1210/clinem/dgab564