Costa, M.A., Sousa, O., Azevedo, I., Castro, C., Fernandes, T. and Vieira, E. 1998. The role of external radiotherapy in the treatment of medullary carcinoma of the thyroid. Acta Médica Portuguesa. 11, 6 (Jun. 1998), 539–42. DOI:https://doi.org/10.20344/amp.2272.