1. Department of Microbiology, Tumor and Cell Biology; Karolinska Institutet; 17177 Stockholm Sweden
2. Department of Medical Biochemistry and Biophysics; Karolinska Institutet; 17177 Stockholm Sweden
3. Institute of Molecular Bacteriology; TWINCORE GmbH; 30625 Hannover Germany
4. School of Biological Sciences; Faculty of Sciences; Nanyang Technological University; Singapore
5. Helmholtz Centre for Infection Research; 38124 Braunschweig Germany