- Hospital General Universitario Gregorio Marañón, Tallaght University Hospital, Tallaght University Hospital, Tallaght University Hospital, Trinity College (Dublin) - St. James’s Hospital, Trinity College (Dublin) - St. James’s Hospital, - Hospital General Universitario Gregorio Marañón, - Hospital General Universitario Gregorio Marañón, Unidade Local de Saúde de Santa Maria, University of Pavia, Fondazione IRCCS Policlinico San Matteo, University of Siena, University of Siena, Ain Shams University, Hospital Universitario La Paz, University of Padua, University of Padua, Azienda Unità Sanitaria Locale (AUSL) - IRCCS di Reggio Emilia, Azienda Unità Sanitaria Locale (AUSL) - IRCCS di Reggio Emilia, Complex Hospitalari Universitari Moisès Broggi, Complex Hospitalari Universitari Moisès Broggi, Medical University of Plovdiv, Ramón y Cajal University Hospital, University of Barcelona - Bellvitge University Hospital, Paracelsius Medical University, University Hospital Marqués de Valdecilla, University Hospital Marqués de Valdecilla, Autonomous University of Barcelona - Hospital Universitari Vall d'Hebron, Universidade de Santiago de Compostela, Universidade de Santiago de Compostela, Infanta Leonor Hospital, Bedfordshire Hospitals NHS Foundation Trust, Hospital Universitario Gregorio Marañón, Hospital Universitario Gregorio Marañón, Medical University of Graz, Hospital Universitario La Paz and Independent

The University of Western Australia - Fiona Stanley Hospital, Johns Hopkins University, Department of Neurology, Donders Institute for Brain, Cognition and Behaviour, University of Lausanne - Lausanne University Hospital, University of Siena, Copenhagen University - Center for Rheumatology and Spine Diseases, affiliation not provided to SSRN, Dokkyo Medical University, affiliation not provided to SSRN, University of Leeds - Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Barcelona, Charité - Universitätsmedizin Berlin - Department of Rheumatology and Clinical Immunology, affiliation not provided to SSRN, University of Pittsburgh, University of Pisa, University of Leeds - Leeds Institute of Rheumatic and Musculoskeletal Medicine, University of Leeds, The University of Western Australia - Fiona Stanley Hospital, Medical University of Vienna, Rigshospitalet - Copenhagen Centre for Arthritis Research and Catholic University of the Sacred Heart of Milan