[1] Univ Hosp Erlangen, Nikolaus Fiebiger Ctr Mol Med, Erlangen, Germany
[2] Univ Erlangen Nurnberg, Univ Hosp Erlangen, Dept Internal Med 3, Erlangen, Germany
[3] Univ Duisburg Essen, Inst Med Microbiol, Duisburg, Germany
[4] Univ Hosp Freiburg, Dept Rheumatol & Clin Immunol, Freiburg, Germany