[1] Helmholtz Ctr Infect Res, Braunschweig, Germany
[2] Hannover Med Sch, Inst Immunol, Hannover, Germany
[3] Hannover Med Sch, Inst Funct & Appl Anat, Hannover, Germany
[4] Charite, Inst Microbiol & Hyg, D-13353 Berlin, Germany
[5] Hannover Med Sch, IFB Tx, Hannover, Germany
[6] German Rheumatism Res Ctr Berlin, Berlin, Germany
[7] Charite, D-13353 Berlin, Germany