1. Tulane University Health Sciences Center (C.Y.B., R.G.), New Orleans, Louisiana 70112
2. Loma Linda University, J. L. Pettit Veterans Affairs Medical Center (S.M., D.B.), Loma Linda, California 92357
3. Division of Endocrinology and Metabolism, Department of Internal Medicine, Mayo Medical and Graduate Schools, General Clinical Research Center, Mayo Clinic (J.K., J.D.V.), Rochester, Minnesota 55905