[1] Univ Zurich, Univ Zurich Hosp, Dept Rheumatol, Zurich, Switzerland
[2] Univ Zurich, Univ Zurich Hosp, Dept Nucl Med, Zurich, Switzerland
[3] Univ Zurich, Ctr Mol Cardiol, Zurich, Switzerland
[4] Univ Bern, Univ Hosp Bern, Dept Cardiol, Zurich, Switzerland
[5] Univ Florence, Div Rheumatol, Dept Expt & Clin Med, Scleroderma Unit,AOUC, Florence, Italy
[6] IRCCS, Unit Immunol Rheumatol Allergy & Rare Dis UnIRAR, San Raffaele Sci Inst, Milan, Switzerland
[7] Univ Hosp Tuebingen, Ctr Interdisciplinary Clin Immunol Rheumatol & Au, Tubingen, Germany
[8] Univ Hosp Tuebingen, Dept Internal Med Hematol Oncol Immunol & Rheum, Tubingen, Germany
[9] Leiden Univ, Dept Rheumatol, Med Ctr, Leiden, Netherlands
[10] Univ Ghent, Ghent Univ Hosp, Dept Rheumatol, Dept Internal Med, Ghent, Belgium
[11] Univ Padua, Dept Med, Rheumatol Unit, Padua, Italy
[12] Descartes Univ, Cochin Hosp, APHP, Dept Rheumatol, Paris, France
[13] IRCCS San Raffaele Sci Inst, Milan, Italy
[14] Univ Vita Salute San Raffaele, Unit Immunol Rheumatol Allergy & Rare Dis UnIRAR, Milan, Italy
[15] Univ Hosp Ctr Zagreb, Zagreb, Croatia
[16] Univ Zagreb, Sch Med, Div Clin Immunol & Rheumatol, Dept Internal Med, Zagreb, Croatia
[17] Univ Pavia, Dept Rheumatol, Fdn IRCCS Policlin San Matteo, Pavia, Italy
[18] Med Univ Bialystok, Dept Rheumatol & Internal Med, Bialystok, Poland
[19] Univ Poitiers Hosp, Dept Internal Med, Poitiers, France
[20] Univ Occupat & Environm Hlth Japan, Dept Internal Med 1, Sch Med, Kitakyushu, Japan
[21] Oslo Univ Hosp, Dept Rheumatol, Oslo, Norway