1Epidemiology Group, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen
2Aberdeen Centre for Arthritis and Musculoskeletal Health, University of Aberdeen
3Medical Statistics Team, Institute of Applied Health Sciences, School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Aberdeen
4Department of Orthopaedics & Trauma, School of Clinical Sciences, University of Edinburgh, Edinburgh, UK
✉Correspondence to: Gary J. Macfarlane, Epidemiology Group, School of Medicine, Medical Science and Nutrition, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK. E-mail: epidemiology@abdn.ac.uk
© The Author(s) 2021. Published by Oxford University Press on behalf of the British Society for Rheumatology.
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