1. Inorganic Chemistry and Center for Nanointegration Duisburg‐Essen (CENIDE) University of Duisburg‐Essen Universitaetsstrasse 5‐7 45117 Essen Germany
2. Institute of Medical Microbiology University Hospital Essen University of Duisburg‐Essen Hufelandstrasse 55 Essen Germany
3. Department of Gastroenterology Hepatology and Transplantation Medicine University Hospital Essen University of Duisburg‐Essen Hufelandstrasse 55 Essen Germany