1. Bone Biology Division; Garvan Institute of Medical Research; School of Medicine; University of New South Wales; Sydney Australia
2. Centre for Statistics in Medicine and Nuffield Department of Orthopaedics; Rheumatology; and Musculoskeletal Sciences (NDORMS); University of Oxford; Oxford UK
3. Clinical School; St Vincent's Hospital; Sydney Australia
4. MRC Lifecourse Epidemiology Unit; Southampton UK
5. GREMPAL Research Group (Idiap Jordi Gol Primary Care Research Institute) and CIBERFes; Universitat Autonoma de Barcelona; Barcelona Spain