[1] NIDDK, Clin Endocrinol Branch, NIH, Bethesda, MD 20892 USA
[2] Lankenau Med Ctr, Div Endocrinol, Wynnewood, PA 19096 USA
[3] NIH, Hatfield Clin Res Ctr, Bethesda, MD 20892 USA
[4] Natl Inst Dent & Craniofacial Res, Skeletal Clin Studies Unit, Craniofacial & Skeletal Dis Branch, NIH, Bethesda, MD 20892 USA