1. Medical and Molecular Microbiology, Faculty of Science and Medicine, University of Fribourg , Chemin du Musée 18 , CH-1700 Fribourg, Switzerland
2. Swiss National Reference Center for Emerging Antibiotic Resistance (NARA), University of Fribourg , Fribourg , Switzerland
3. INSERM European Unit (IAME, France), University of Fribourg , Fribourg , Switzerland
4. Institute for Microbiology, University of Lausanne and University Hospital Centre , Lausanne , Switzerland