1. Institute of Microbiology, University of Lausanne & University Hospital Center, 1011 Lausanne, Switzerland
2. Institute of Medical Microbiology, University of Zurich, 8006 Zurich, Switzerland
3. Bacteriology Laboratory, Service of Laboratory Medicine, Department of Diagnostic, Geneva University Hospitals, 1211 Geneva, Switzerland
4. Swiss Tropical and Public Health Institute, 4123 Allschwil, Switzerland
5. University of Basel, 4002 Basel, Switzerland
6. ADMed Microbiologie Laboratory, 2300 La Chaux-de-Fonds, Switzerland
7. Department of Infectious Diseases, Institut Central des Hôpitaux, Hôpital du Valais, 1950 Sion, Switzerland
8. Dr Risch Medical Laboratory, Wuhrstrasse 14, 9490 Vaduz, Switzerland
9. Infectious Disease Service, University of Lausanne & University Hospital Center, 1011 Lausanne, Switzerland