Branco, T., Ventura, A., Figueiredo, A., Pinheiro, N., Almeida, V. and Gonçalves, J. 1992. Primary hyperparathyroidism. Acta Médica Portuguesa. 5, 10 (Oct. 1992), 555–7. DOI:https://doi.org/10.20344/amp.3292.