Analysis of the diagnostic presentation profile, parathyroidectomy indication and bone mineral density follow-up of Brazilian patients with primary hyperparathyroidism. U.E.M. Oliveira, M.N. Ohe, R.O. Santos, O. Cervantes, M. Abrahão, M. Lazaretti-Castro, J.G.H. Vieira and O.M. Hauache. Braz J Med Biol Res, April 2007, Volume 40(4) 519-526.