1. Monash Centre for Occupational and Environmental Health, University of Monash , Melbourne, Victoria , Australia
2. MRC Versus Arthritis Centre for Musculoskeletal Health and Work, MRC Lifecourse Epidemiology Centre, University of Southampton , Southampton , UK
3. MRC Versus Arthritis Centre for Musculoskeletal Health and Work, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen, UK
4. Aberdeen Centre for Arthritis and Musculoskeletal Health (Epidemiology Group), School of Medicine, Medical Sciences and Nutrition, University of Aberdeen , Aberdeen, UK
5. Department of Nursing and Midwifery, School of Human and Health Sciences, University of Huddersfield , Huddersfield, UK
6. Robertson Centre for Biostatistics, University of Glasgow , Glasgow, UK
7. Medical and Scientific Affairs, Astrazeneca UK Limited , 2 Pancras Square, 8th floor, London N1C 4AG , UK