1. Nosocomial Pathogens and Antibiotic Resistances Unit, Department of Infectious Diseases, National Reference Centre for Staphylococci and Enterococci, Robert Koch Institute , Wernigerode , Germany
2. Friedrich Loeffler Institute of Medical Microbiology, University Medicine Greifswald , Greifswald , Germany
3. Institute for Hygiene and Microbiology, University of Würzburg , Würzburg , Germany
4. Institute for Medical Microbiology and Virology, University Medical Center Göttingen , Göttingen , Germany
5. Department of Infectious Disease Epidemiology, Robert Koch Institute , Berlin , Germany
6. Institute of Medical Microbiology and Hygiene, University of Tübingen , Tübingen , Germany
7. Institute for Medical Microbiology and Virology, Carl von Ossietzky University Oldenburg and Klinikum Oldenburg , Oldenburg , Germany
8. Institute of Medical Microbiology, Virology and Hygiene, University Medical Center Hamburg-Eppendorf , Hamburg , Germany
9. Institute of Medical Microbiology and Infection Control, University Hospital Frankfurt, Goethe University Frankfurt , Frankfurt am Main , Germany
10. Faculty of Medicine, Institute of Medical Microbiology and Hospital Hygiene, Otto-von-Guericke-University , Magdeburg , Germany
11. Center for Health and Medical Prevention (CHaMP), Otto-von-Guericke University Magdeburg , Magdeburg , Germany
12. Institute of Hygiene and Environmental Medicine, Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin , Berlin , Germany
13. Institute of Medical Microbiology, Immunology and Parasitology, University Hospital Bonn , Bonn , Germany
14. Institute for Hygiene and Public Health, University Hospital Bonn , Bonn , Germany
15. Institute of Hospital Hygiene, Medical Microbiology and Infectious Diseases, Nuremberg General Hospital, Paracelsus Medical University , Nuremberg , Germany
16. Laboratory Prof. Gisela Enders and Colleagues , Stuttgart , Germany