[1] Columbia Univ, Coll Phys & Surg, Dept Med, New York, NY 10032 USA
[2] McMaster Univ, Div Endocrinol, Hamilton, ON, Canada
[3] McMaster Univ, Div Geriatr, Hamilton, ON, Canada
[4] Massachusetts Gen Hosp, Endocrine Unit, Boston, MA 02114 USA
[5] Harvard Univ, Sch Med, Boston, MA USA
[6] Univ Florence, Sch Med, Dept Internal Med, Unit Bone & Mineral Metab, Florence, Italy
[7] Mayo Clin, Dept Med, Rochester, MN USA
[8] Univ Calif San Francisco, San Francisco VA Med Ctr, Endocrine Res Unit, San Francisco, CA 94143 USA
[9] Massachusetts Gen Hosp, Pediat Nephrol Unit, Boston, MA 02114 USA
[10] Hop St Luc, CHUM, Ctr Rech, Montreal, PQ H2X 1P1, Canada
[11] Univ Montreal, Dept Med, Montreal, PQ H3C 3J7, Canada
[12] NPS Pharmaceut, Bedminster, NJ USA
[13] Aarhus Univ Hosp, Dept Endocrinol & Internal Med, DK-8000 Aarhus, Denmark
[14] Helen Hayes Hosp, Reg Bone Ctr, W Haverstraw, NY USA
[15] Columbia Univ, Coll Phys & Surg, Dept Pathol, New York, NY 10032 USA
[16] Natl Inst Dent & Craniofacial Res, Craniofacial & Skeletal Dis Branch, NIH, Dept Hlth & Human Serv, Bethesda, MD USA
[17] Hypoparathyroidism Assoc, Idaho Falls, ID USA