1. Strewler GJ, Rosenblatt M (1995) Primary hyperparathyroidism: In: Felig P, Baxter JD, Frohman LA (eds) Endocrinology and metabolism, 3rd edn. McGraw Hill,New York, pp 1452–1467
2. Cogan MG, Covey CM, Wisniewski A, Clark OH (1978) Central nervous system manifestations of hyperparathyroidism. Am J Med 65:963–970
3. Joborn C, Hetta J, Frisk P, Palmer M, Akerstrom G, Ljunghall S (1986) Primary hyperparathyroidism in patients with organic brain syndrome. Acta Med Scand 219:91–98
4. Pfitzenmeyer P, Besancenot JF, Verges B, Cougard P, Lorcerie B, Cercueil JP, Monnier V, Turcu A, Gaudet M (1993) Primary hyperparathyroidism in very old patients. Eur J Med 2:453–456
5. Trouillas P, Brudon F, Saubier M (1985) Encéphalopathie parathyrotoxique sans hypercalcémie. Rev Neurol 141:562–570