1. Research Institute (P.M.C., S.R.C.), California Pacific Medical Center, San Francisco, California 94107-1728
2. University of Minnesota and Minneapolis VA Medical Center (K.E.E.), Minneapolis, Minnesota 55417
3. Department of Family and Preventive Medicine (G.A.L., E.B.-C.), University of California at San Diego, La Jolla, California 92103
4. University of Pittsburgh (J.A.C.), Pittsburgh, Pennsylvania 15260
5. Department of Medicine (T.-T.L.D.), Columbia University, New York, New York 10027
6. University of Minnesota (H.A.F.), Geriatric Research Education and Clinical Center, VA Medical Center, and Center for Chronic Disease Outcomes Research, VA Medical Center, Minneapolis, Minnesota 55417
7. Veterans Affairs Palo Alto Health Care System and Stanford University Medical Center (A.R.H.), Palo Alto, California 94305
8. Center for Health and Medical Research (E.L.), Hong Kong, China
9. Department of Medicine (N.E.L.), University of California at Davis Medical School, Sacramento, California 95817
10. Stanford Prevention Research Center (M.L.S.), Stanford School of Medicine, Stanford, California 94305
11. Bone and Mineral Unit (E.S.O.), Oregon Health and Science University, Portland, Oregon 97239