1. Oregon Health and Science University (E.O.), Portland, Oregon 97239
2. Center for Clinical and Basic Research (C.S.T.), Ballerup 2750, Denmark
3. Aarhus University Hospital (B.L.L.), Aarhus 8000, Denmark
4. Institut National de la Santé et de la Recherche Médicale Unité Mixte de Recherche 1033 (R.C.), Université de Lyon, Hôpital Edouard Herriot, Lyon 69003, France
5. Krakow Medical Center (E.C.), Krakow 31-501, Poland
6. University of British Columbia (D.L.K.), Vancouver, British Columbia V6H 3X8, Canada
7. University of Liège (J.-Y.R.), Liège 4020, Belgium
8. Altoona Center for Clinical Research (A.K.), Duncansville, Pennsylvania 16635
9. New Mexico Clinical Research and Osteoporosis Center (E.M.L.), Albuquerque, New Mexico 87106
10. Colorado Center for Bone Research (P.D.M.), Lakewood, Colorado 80227
11. Bethesda Health Research Center (M.A.B.), Bethesda, Maryland 20817
12. Oregon Osteoporosis Center (M.R.M.), Portland, Oregon 97213
13. Michigan Bone and Mineral Clinic (H.G.B.), Detroit, Michigan 48236
14. Uppsala University (O.L.), Uppsala 75185, Sweden
15. University of Southern Denmark and Gentofte Hospital (B.A.), Odense 5000 and Hellerup 2900, Denmark
16. Dallas Veterans Affairs Medical Center and University of Texas Southwestern (U.G.), Dallas, Texas 75216
17. Amgen Inc. (Y.-C.Y., R.B.W., S.S., A.G., J.W.H.), Thousand Oaks, California 91320
18. and Leuven University (S.B.), Leuven 3000, Belgium