1. Leiden Academic Centre for Drug Research (LACDR), Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands
2. Department of Chemistry, Johannes Gutenberg University Mainz, Duesbergweg 10-14, 55128 Mainz, Germany
3. Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Mainz, Langenbeckstr. 1, 55131 Mainz, Germany
4. Department of Otorhinolaryngology, University Medical Center Bonn (UKB), Venusberg-Campus 1, 53127 Bonn, Germany
5. Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany