[1] Fed Univ Parana SEMPR UFPR, Dept Internal Med, Curitiba, Parana, Brazil
[2] Fed Univ Parana SEMPR UFPR, Bone Unit, Div Endocrinol, Curitiba, Parana, Brazil
[3] Pro Renal Fdn, Lab PRO, Bone Histomorphometry Div, Curitiba, PR, Brazil
[4] Helen Hayes Hosp, Reg Bone Ctr, W Haverstraw, NY USA
[5] Columbia Univ, Dept Pathol, Coll Phys & Surg, New York, NY USA