1. Rheumatology Unit, Department of Medicine, Surgery and Neurosciences University of Siena Siena Italy
2. Department of Rheumatology Pakistan Institute of Medical Sciences Islamabad Pakistan
3. Clinical Immunology and Rheumatology Sanjay Gandhi Postgraduate Institute of Medical Sciences Lucknow Uttar Pradesh India
4. Department of Rheumatology Royal Wolverhampton Hospitals NHS Trust Wolverhampton UK
5. Department of Rheumatology City Hospital, Sandwell and West Birmingham Hospitals NHS Trust Birmingham UK
6. Division of Musculoskeletal and Dermatological Sciences, Centre for Musculoskeletal Research, School of Biological Sciences The University of Manchester Manchester UK