1. Department of Obstetrics and Gynecology, Technical University of Munich, Ismaninger Str. 22, D-81675 Munich, Germany
2. Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, ul. Gronostajowa 7, 30-387 Krakow, Poland
3. Department of Clinical Chemistry and Clinical Biochemistry, Ludwig-Maximilians-University, Nussbaumstr. 20, D-80336 Munich, Germany
4. Department of Medical Microbiology, University Hospital of Jena, Semmelweisstr. 4, D-07740 Jena, Germany
5. Max Planck Institute of Biochemistry, Am Klopferspitz 18, D-82152 Martinsried, Germany