1. Versus Arthritis/Medical Research Council Centre for Musculoskeletal Health and Work (Guy's & St Thomas' NHS Foundation Trust and King's College London), London, United Kingdom
2. Versus Arthritis/Medical Research Council Centre for Musculoskeletal Health and Work (King's Centre for Military Health Research, King's College London), London, United Kingdom
3. Versus Arthritis/Medical Research Council Centre for Musculoskeletal Health and Work (University of Aberdeen), Aberdeen, United Kingdom
4. Department of Public and Occupational Health, Cochrane Work, Amsterdam UMC, University of Amsterdam, Amsterdam, the Netherlands