1. Institute of Pathology, University of Duesseldorf, Moorenstrasse 5, 40225 Düsseldorf, Germany
2. Institute of Pathology, University of Wuerzburg and CCC Mainfranken, Josef-Schneider-Straße 2, 97080 Würzburg, Germany
3. Institute of Hygiene and Microbiology, University of Wuerzburg, Josef-Schneiderstrasse 2, 97070 Würzburg, Germany
4. Frauenklinik am Rotkreuzklinikum München, 80634 München, Germany
5. Department of Medicine II, University Hospital Klinikum rechts der Isar, 81675 München, Germany
6. Institute of Medical Microbiology, Immunology and Hygiene, Technische Universität München (TUM), Ismaningerstrasse 25, 80333 München, Germany