1. Department of Otorhinolaryngology, University Hospital Essen, Hufelandstraße 55, 45147 Essen, Germany
2. Department of Chemistry, University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany
3. Department of Aquatic Ecology and Centre for Water and Environmental Research (ZWU), University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany
4. Center of Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, Universitätsstraße 5, 45141 Essen, Germany
5. Center of Medical Biotechnology (ZMB), University Hospital Essen, Hufelandstraße 55, 45147 Essen, Germany
6. University of Duisburg-Essen, Universitätsstraße 5, 451471 Essen, Germany
7. German Cancer Consortium, Partner Site Essen-Düsseldorf, 45147 Essen, Germany