1. Department of Public Health, Epidemiology & Health Economics, University of Liège, Liège, Belgium
2. Department of Internal Medicine, University of Florence, Florence, Italy
3. Science Manager, International Osteoporosis Foundation, Nyon, Switzerland
4. MRC Epidemiology Resource Centre and University of Southampton, Southampton, UK
5. LRMS, KAT Hospital, 14561 Kifissia, Greece
6. Institute of Clinical Osteology, Gustav Pommer & Clinic ‘Der Fürstenhof’, Bad Pyrmont, Germany
7. Division of Gerontology and Geriatrics & Center for Musculoskeletal Research, Leuven University Department of Experimental Medicine, Leuven, Belgium
8. Bone and Cartilage Metabolism Unit, University of Liège, Liège, Belgium
9. Department of Rehabilitation and Geriatrics, University Hospitals of Geneva, Geneva, Switzerland
10. Department of Orthopedics, Malmö University Hospital, Lund University, Malmö, Sweden