1. Divisions of Endocrinology, Diabetes and Metabolism (A.G.P., B.D.-H.), Tufts-New England Medical Center, Boston, Massachusetts 02111
2. Clinical Research (J.L.), Tufts-New England Medical Center, Boston, Massachusetts 02111
3. Harvard School of Public Health and Channing Laboratory (F.B.H.), Boston, Massachusetts 02115
4. Bone Metabolism Laboratory (B.D.-H.), Jean Mayer U.S. Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts 02111