[1] University Hospital Basel,Department of Rheumatology
[2] University Hospital Zurich,Department of Rheumatology
[3] Institut Central—Hôpital du Valais,Immunology & Allergy
[4] Kantonsspital Luzern,Division of Immunology and Allergy
[5] Actelion Pharma Schweiz AG,Department of Rheumatology, Immunology and Allergology
[6] University Hospital and School of Medicine,undefined
[7] Kantonsspital Aarau,undefined
[8] Kantonsspital St. Gallen,undefined
[9] Centre Hospitalier Universitaire Vaudois,undefined
[10] University Hospital and University of Bern,undefined