1. Head and Neck Surgery/Plastic Surgery, Clinic for Oto-Rhino-Laryngology, Bad Saarow, HELIOS Clinics Bad Saarow, Germany
2. Institute for International Media and Computing, Economics II, University of Applied Science, Berlin, Germany
3. Department for Otolaryngology, AMEOS Klinikum Haldensleben, Haldensleben, Germany