1 Department of Rheumatology, Hospital Infante D. Pedro, Unidade de Saúde Local da Região de Aveiro, Aveiro, Portugal.
2 Aveiro Rheumatology Research Centre (ARC), Egas Moniz Health Alliance, Aveiro, Portugal.
3 Department of Rheumatology and Clinical Immunology, Pontificia Universidad Católica de Chile, Santiago, Chile.
4 Department of Rheumatology, National Hospital Alejandro Posadas, Buenos Aires, Argentina.
5 UCL Centre for Rheumatology, Department of Inflammation, Division of Medicine, University College London, London, UK.
6 Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA.
7 Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust,Manchester Academic Health Science Centre, Salford, UK.
8 Division of Musculoskeletal and Dermatological Sciences, Centre for Musculoskeletal Research, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.
9 Department of Rheumatology, 1st Medical Faculty, Charles University, Prague, Czech Republic.
10 Department of Rheumatology, Royal Wolverhampton Hospitals NHS Trust, Wolverhampton, UK.
11 Department of Paediatric Rheumatology, Alder Hey Children's NHS Foundation Trust, Liverpool, UK.
12 Department of Allergy and Rheumatology, Nippon Medical School, Tokyo, Japan.
13 Department of Neurology, University of Kansas Medical Center, Kansas City, Missouri, USA.
14 Pediatrics Division of Rheumatology, Seattle Children's Hospital and Research Center, Seattle, Washington, USA.
15 Louisiana State University and Tulane University Schools of Medicine, University Medical Center, New Orleans, Louisiana, USA.
16 UCL Centre for Rheumatology, Department of Inflammation, Division of Medicine, University College London, London, UK p.machado@ucl.ac.uk.
17 Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, University College London, London, UK.