[1] Univ Bonn, Inst Med Mikrobiol & Immunol, D-53105 Bonn, Germany
[2] Univ Bonn, Inst Unfallchirurg, D-53105 Bonn, Germany
[3] Univ Bonn, Inst Pathol, D-53105 Bonn, Germany
[4] Robert Koch Inst, D-13302 Berlin, Germany
[5] Natl Inst Hlth, Dept Bacteriol, Shingawa Ku, Kamiosaki, Japan