1. Endocrine Division (SEMPR), Department of Internal Medicine, Federal University of Paraná, Curitiba, Paraná, 80030-110, Brazil
2. Professor of Endocrinology, University of Southern Santa Catarina (Unisul), Palhoça, Santa Catarina, 88137-270, Brazil
3. Nephrology Unit, Clinics Hospital of Federal University of Paraná, Curitiba, Paraná, 80030-110, Brazil
4. Department of Pathology and Cell Biology, Columbia University, New York, NY 10032, USA
5. Laboratory PRO – section of bone histomorphometry, Fundação Pró-Renal, Curitiba, Paraná, 80030-110, Brazil