1. Helmholtz Centre for Infection Research, Chemical Microbiology, Inhoffenstrasse 7, 38124 Braunschweig, Germany
2. BCCM/LMG Bacteria Collection, Universiteit Gent, K.L. Ledeganckstraat 35, Gent, Belgium
3. Department of Microbiology and Immunology, University of British Columbia, Vancouver, BC, Canada
4. Central Facility for Microscopy, Helmholtz Centre for Infection Research, Braunschweig, Germany