1. California Pacific Medical Center; Research Institute; San Francisco CA USA
2. Helen Hayes Hospital and Department of Medicine; Columbia University College of Physicians and Surgeons; New York NY USA
3. New Mexico Clinical Research & Osteoporosis Center; Albuquerque NM USA
4. Park Nicollet Institute for Research and Education; Division of Rheumatology; Minneapolis MN USA
5. Departments of Medicine and Epidemiology & Biostatistics; University of California, San Francisco; San Francisco CA USA
6. University of California, San Francisco; Department of Epidemiology and Biostatistics; San Francisco CA USA
7. University of Iowa, Department of Orthopedics and Rehabilitation; Iowa City IA USA
8. University of Toronto; Faculty of Medicine; Ontario Canada
9. Foundation for Osteoporosis Research and Education; Oakland CA USA
10. University of Southampton; MRC Lifecourse Epidemiology Unit; Southhampton United Kingdom
11. Hospital del Mar-IMIM-Universitat Autònoma de Barcelona and RETICEF; Instituto Carlos III, Spain, Internal Medicine - Infectious Diseases; Barcelona Spain
12. University of Sheffield; Human Metabolism; England United Kingdom
13. Philipps-University of Marburg; Department of Endocrinology; Osteoporosis, and Reproductive Medicine; Marburg Germany
14. National Center for Geriatrics and Gerontology; Obu City Aichi Prefecture Japan
15. Johns Hopkins University; Baltimore MD USA
16. University of California, San Francisco; San Francisco CA USA
17. Hebrew SeniorLife; Institute for Aging Research; Boston MA USA
18. University of Auckland; Department of Medicine; Auckland New Zealand
19. Brigham and Women's Hospital; Division of Rheumatology; Boston MA USA
20. National Osteoporosis Foundation; Arlington VA USA