1. Department of Clinical, Internal, Anaesthesiology, and Cardiovascular Sciences Sapienza University of Rome Rome Italy
2. SEPAR, S.L. (Private Clinic), Calle Linaje Malaga Spain
3. Department of Surgical, Oncologic, and Stomatologic Disciplines University of Palermo Palermo Italy
4. MDS 360 (Private Clinic), Chamartín Madrid Spain
5. Division of Rheumatology, Department of Medicine University and Azienda Ospedaliera Universitaria Integrata of Verona Verona Italy
6. University of California San Francisco CA USA
7. Epidemiology and Risk Management, Oxon Epidemiology Madrid Spain
8. Faculty of Epidemiology and Population Health London School of Hygiene and Tropical Medicine London UK
9. Rheumatology Service Hospital del Mar, Passeig Marítim and IMIM (Hospital del Mar Medical Research Institute), Parc de Recerca Biomèdica de Barcelona Barcelona Spain