1. ESCEO ASBL, Liège, Liège, Belgium,
2. Department of Public Health, Epidemiology and Health Economics, University of Liège, Liège, Liège, Belgium,
3. MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, United Kingdom,
4. NIHR Musculoskeletal Biomedical Research Unit, University of Oxford, Oxford, United Kingdom,
5. Collaborating Centre for Metabolic Bone Diseases, University of Sheffield, Sheffield, United Kingdom,
6. Service of Bone Diseases, Faculty of Medicine, Geneva, University Hospitals, Geneva, Switzerland