1. Laboratory for Biomaterials, Institute for Biotechnology and Helmholtz-Institute for Biomedical Engineering, RWTH Aachen University, Pauwelsstrasse 20, 52074 Aachen, Germany
2. Department of Internal Medicine III, University Hospital, RWTH Aachen University, Pauwelsstrasse 30, 52074 Aachen, Germany
3. Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, 14220 Prague, Czech Republic