2 Department of Clinical Immunology and Rheumatology, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, India.
3 Southport and Ormskirk Hospital NHS Trust, Southport, UK.
4 Department of Rheumatology, Royal Melbourne Hospital, Parkville, VIC, Australia.
5 Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia.
6 Department of Medical Biology, University of Melbourne, Parkville, VIC, Australia.
7 Byramjee Jeejeebhoy Government Medical College and Sassoon General Hospitals, Pune, India.
8 Division of Rheumatology and Clinical Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
9 Department of Rheumatology, Royal Wolverhampton Hospitals NHS Trust, Wolverhampton WV10 0QP, UK.
10 Division of Musculoskeletal and Dermatological Sciences, Centre for Musculoskeletal Research, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester, UK.
11 City Hospital, Sandwell and West Birmingham Hospitals NHS Trust, Birmingham, UK.