1. Reutlingen Research Institute, Reutlingen University , Alteburgstr. 150, Reutlingen 72762, Germany
2. Department of Otolaryngology, Head, and Neck Surgery, Eberhard Karls University of Tübingen , Elfriede-Aulhorn-Strasse 5, Tübingen 72076, Germany
3. Department of Anatomy, Eberhard Karls University of Tübingen , Elfriede-Aulhorn-Strasse 8, Tübingen 72076, Germany
4. Technical Faculty (Fakultät TEC), Reutlingen University , Alteburgstr. 150, Reutlingen 72762, Germany