1. Department of Endocrinology & Metabolic Diseases, Leiden University Medical Center, Leiden, The Netherlands
2. INSERM UMR 1033, Université de Lyon, Lyon, France
3. Amgen Inc., Thousand Oaks, CA, USA
4. Department of Internal Medicine, University of Florence, Florence, Italy
5. Department of Medicine, Laval University and Rheumatology Division, CHUQ Research Centre, Laval University, Quebec City, QC, Canada
6. Krakow Medical Center, Krakow, Poland
7. Bone and Joint Department, University Hospital of Lausanne, Lausanne, Switzerland
8. Endocrinology Division, Centro TIEMPO, Buenos Aires, Argentina
9. Osteoporosis Clinic, Center for Bone Research, Sahlgrenska University Hospital, Göteborg, Sweden
10. Department of Internal Medicine, Universidade Federal do Paraná, Curitiba, Brazil
11. Bone and Cartilage Metabolism Unit, University of Liège, Liège, Belgium
12. Medical Department II, St. Vincent Hospital, Vienna, Austria
13. Rheumatology Unit, Hospital Universitario La Fe, Valencia, Spain
14. Department of Rheumatology, Cochin Hospital, Paris Descartes University, Paris, France
15. Department of Epidemiology and Biostatistics, University of California San Francisco, San Francisco, CA, USA
16. San Francisco Coordinating Center, CPMC Research Institute, and University of California San Francisco, San Francisco, CA, USA
17. Michigan Bone and Mineral Clinic, Detroit, MI, USA