Casella, Claudio, et al. “Neurological and Psychiatric Disorders in Primary Hyperparathyroidism: The Role of Parathyroidectomy”. Annali Italiani Di Chirurgia, vol. 79, no. 3, May 2008, pp. 157-64, https://annaliitalianidichirurgia.it/index.php/aic/article/view/775.