Institution: | 1. Department of Oto‐Rhino‐Laryngology, Head and Neck Surgery, Ulm University Medical Center, Ulm;2. Department of Oto‐Rhino‐Laryngology, Technische Universit?t München, München;3. Department of Oto‐Rhino‐Laryngology, University Duisburg‐Essen, Essen;4. Institute of Pharmacology and Clinical Pharmacology, Heinrich‐Heine‐Universit?t, Düsseldorf, Germany |