1. Department of Oto‐Rhino‐LaryngologyUniversity of CologneCologne Germany
2. Anatomical Institute IUniversity of CologneJoseph‐Stelzmann‐Strasse 9, D‐50924Köln Germany
3. Department of NeurosurgeryUniversity of Witten/HerdeckeCologne Merheim Medical Center, Cologne Germany
4. Department of AnatomyMedical University of VarnaVarna Bulgaria
5. Department of AnatomyAkdeniz University Faculty of MedicineAntalya Turkey
6. Experimental and Regenerative Neuroscience, School of Biological SciencesThe University of Western AustraliaCrawley Western Australia Australia