[1] German Ctr Infect Res DZIF, Braunschweig, Germany
[2] Univ Freiburg, Fac Med, Med Ctr, Dept Med,Div Infect Dis, Freiburg, Germany
[3] Univ Hosp Cologne, Inst Med Microbiol Immunol & Hyg, D-50937 Cologne, Germany
[4] Charite, Natl Reference Ctr Surveillance Nosocomial Infect, Inst Hyg & Environm Med, D-12203 Berlin, Germany
[5] Univ Tubingen, Inst Med Microbiol & Hyg, D-72076 Tubingen, Germany
[6] Tech Univ Munich, Inst Med Microbiol Immunol & Hyg, D-81675 Munich, Germany
[7] Univ Lubeck, Inst Med Microbiol & Hyg, D-23538 Lubeck, Germany
[8] Univ Med Ctr Hamburg Eppendorf, Inst Med Microbiol Virol & Hyg, Hamburg, Germany
[9] Univ Med Ctr Freiburg, Inst Med Microbiol & Hyg, D-79106 Freiburg, Germany
[10] Univ Tubingen Hosp, Div Infect Dis, Dept Internal Med 1, D-72076 Tubingen, Germany