1 Department of Rheumatology, Centro Hospitalar Universitário Lisboa Norte and Rheumatology Research Unit Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Centro Académico de Medicina de Lisboa, Lisbon, Portugal.
2 Systemic Autoimmunity Branch, NIAMS, National Institutes of Health, Bethesda, Maryland.
3 Centre for Health and Clinical Research, University of the West of England and Rheumatology Department University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK.
4 Te Whatu Ora - Health New Zealand, Auckland, New Zealand.
5 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, Oxford NIHR Biomedical Research Centre, University of Oxford Oxford, UK, Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol and NIHR Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust, University of Bristol, Bristol, UK.
6 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, Oxford NIHR Biomedical Research Centre, University of Oxford and Norwich Medical School, University of East Anglia, Norwich, UK.
7 Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, Oxford NIHR Biomedical Research Centre, University of Oxford, Oxford, UK.
8 Division of Rheumatology, Department of Medicine and Division of Epidemiology, Department of Biostatistics, Epidemiology, and Informatics, University of Pennsylvania, Philadelphia, Pennsylvania.