1 Department of Emergency and Organ Transplantation, Rheumatology Unit, Bari, Italy.
2 Division of Rheumatology, Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA.
3 Department of Rheumatology, Calcutta Medical Research Institute, Kolkata, India.
4 Division of Musculoskeletal and Dermatological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, UK.
5 Department of Rheumatology, Salford Royal Hospital, Northern Care Alliance NHS Foundation Trust, Manchester Academic Health Science Centre, Salford, UK.
6 Department of Rheumatology, Royal Wolverhampton Hospitals NHS Trust, Wolverhampton, UK.