1. Institute of Medical Microbiology, University Hospital Münster, Domagkstr. 10, 48149 Münster, Germany
2. Department of Infectious Diseases, Medical Microbiology and Hygiene, Heidelberg University Hospital, Im Neuenheimer Feld 324, 69120 Heidelberg, Germany
3. Department of Medical Microbiology, Ruhr University Bochum, Universitätsstraße 150, 44801 Bochum, Germany
4. Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Sigmund-Freud-Str. 25, 53127 Bonn, Germany