1. ETH Zürich, Institute of Microbiology, Wolfgang-Pauli Strasse 10, HCI G405, 8093 Zürich, Switzerland
2. EA3796, IFR53, UFR of Pharmacy, University of Reims Champagne Ardenne, 1 Avenue du Marechal Juin, 51100 Reims, France
3. Department of Microbiology and Immunology, CUNY Medical School/Sophie Davis School of Biomedical Education, The City College of New York, 160 Convent Avenue, H-207, New York, NY 10031, USA