1. Department of Prosthetic Dentistry, School of Dental and Oral MedicineUniversity of Cologne Cologne Germany
2. Department of NeurosurgeryUniversity of Witten/Herdecke, Cologne Merheim Medical Center (CMMC) Cologne Germany
3. Department of Anatomy, School of MedicineSANKO University Gaziantep Turkey
4. Department of Histology and EmbryologyAristotle University Thessaloniki Thessaloniki Greece
5. Department of Oto‐Rhino‐LaryngologyUniversity of Cologne Cologne Germany
6. Department of Anatomy 1University of Cologne Cologne Germany