1. Department of Medicinal Chemistry, School of Pharmacy, University of Washington, Seattle, Washington 98105, United States
2. Institute of Biochemistry, Heinrich-Heine University, 40225 Düsseldorf, Germany
3. Department of Pediatrics III, University Children’s Hospital Essen, University of Duisburg-Essen, 45122 Essen, Germany
4. Department of Otorhinolaryngology and Head/Neck Surgery, Heinrich-Heine University, 40225 Düsseldorf, Germany