1. Department of Medicine (A.K.L., T.J.B., J.A.W., M.E.K., D.B.D.), Division of Endocrinology, University of Wisconsin-Madison, Madison, Wisconsin 53705
2. Department of Nutritional Sciences (J.C.N.), University of Wisconsin-Madison, Madison, Wisconsin 53706
3. William S. Middleton Memorial Veterans Hospital (D.B.D.), Madison, Wisconsin 53705