1. Faculty of Medicine; Institute of Neuroanatomy; Uniklinik RWTH Aachen Aachen 52074 Germany
2. Interdisciplinary Centre for Clinical Research (IZKF) Aachen; Uniklinik RWTH Aachen Aachen 52074 Germany
3. Department of Pharmacology and Chemical Biology, School of Medicine; University of Pittsburgh; Pittsburgh Pennsylvania
4. Department of Anatomical Sciences, Faculty of Medicine; Giulan University of Medical Sciences; Rasht Iran
5. Department of Anatomy II; Ludwig-Maximilians-University of Munich; Munich Germany
6. Department of Anatomy and Cell Biology, Faculty of Medicine; Uniklinik RWTH Aachen Aachen 52074 Germany
7. Department of Orthopaedic Surgery, Faculty of Medicine, Uniklinik RWTH Aachen, Aachen, 52074, Germany