[1] Univ Split, Sch Med, Univ Hosp Ctr Split, Div Rheumatol & Clin Immunol, Split, Croatia
[2] Univ Hosp Charite Berlin, Dept Rheumatol & Clin Immunol, Berlin, Germany
[3] Univ Hosp Bern, Dept Rheumatol Clin Immunol & Allergol, CH-3010 Bern, Switzerland
[4] Univ Bern, Bern, Switzerland