[1
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departmentDepartment of Rheumatology , Hospital of Southwest Jutland , Esbjerg, Denmark
[2
]
departmentDepartment of Internal Medicine, Clinical Division of Internal Medicine II , Medical University of Innsbruck , Innsbruck, Austria
[3
]
departmentDepartment of Rheumatology , Medical University of Graz , Graz, Austria
[4
]
departmentDepartment of Rhematology , Hospital of Bruneck , Bruneck, Italy
[5
]
departmentIII. Medical Clinic, Department of Oncology, Hematology and Rheumatology , University Hospital Bonn , Berlin, Germany
[6
]
Leiden University Medical Center , Leiden, The Netherlands
[7
]
departmentEpidemiology Unit , Italian Society for Rheumatology (SIR) , Milan, Italy
[8
]
departmentDepartment of Rheumatology , University of Ferrara , Ferrara, Italy
[9
]
departmentDepartment of Rheumatology , University Medical Centre Ljubljana , Ljubljana, Slovenia
[10
]
Martina Hansens Hospital , Bærum, Oslo, Norway
[11
]
departmentDipartimento Scienze Cliniche e Biologiche - Reumatologia , Università degli Studi di Torino , Torino, Italy
[12
]
departmentDepartment of Rheumatology , Norfolk and Norwich University Hospital , Norwich, UK
[13
]
departmentHospital de Santa Maria - CHLN , Lisbon Academic Medical Centre , Lisbon, Portugal
[14
]
Hospital Universitario Fundación Jiménez Díaz , Madrid, Spain
[15
]
University Hospital La Paz , Madrid, Spain
[16
]
MC Groep Hospitals , Lelystad, The Netherlands
[17
]
departmentRheumatology , Mayo Clinic , Rochester, Minnesota, USA
[18
]
Copenhagen Center for Arthritis Research (COPECARE) , Copenhagen, Denmark
[19
]
departmentDepartment of Rheumatology and Internal Medicine , Pomeranian Medical University , Szczecin, Poland
[20
]
Hôpital Ambroise Paré , Boulogne-Billancourt, France
[21
]
St. Elizabeth’s Medical Center , Boston, Massachusetts, USA
[22
]
departmentDepartment of Rheumatology, First Faculty of Medicine , Charles University of Prague , Prague, Czech Republic
[23
]
Arcispedale Santa Maria Nuova , Reggio Emilia, Italy
[24
]
departmentDepartment of Rheumatology , University of California , Los Angeles, California, USA
[25
]
Diagnostic Centre Region Hospital Silkeborg , Silkeborg, Denmark
[26
]
departmentDepartment of Rheumatology , Odense University Hospital , Odense, Denmark
[27
]
Asklepios Medical Center , Bad Abbach, Germany
[28
]
Southend University Hospital NHS Foundation Trust & Anglia Ruskin University , Southend-on-Sea, UK
[29
]
departmentMedical Centre for Rheumatology , Immanuel Krankenhaus Berlin , Berlin, Germany
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