1. University of Wisconsin Osteoporosis Clinical Research Program (N.B., D.K., T.K., M.K.D.), Madison, Wisconsin 53705
2. Human Nutrition, Food and Animal Sciences (R.N., Y.G.D.), University of Hawaii at Manoa, Honolulu, Hawaii 96822
3. Laboratory Medicine (G.L.), University of Wisconsin, Madison, Wisconsin 53792
4. Medical University of South Carolina (B.W.H.), Charleston, South Carolina 29425