[1] Univ Erlangen Nurnberg, Dept Internal Med 3, D-8520 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Inst Clin Immunol, D-8520 Erlangen, Germany
[3] Vilnius Univ, Fac Med, Ctr Rheumatol, Vilnius, Lithuania
[4] Univ Zurich Hosp, Ctr Expt Rheumatol, CH-8091 Zurich, Switzerland
[5] Univ Zurich Hosp, Zurich Ctr Integrat Human Physiol, CH-8091 Zurich, Switzerland