1. Department of Histology and Embryology, Faculty of Medicine, Ege University, İzmir, Turkey
2. Cord Blood, Cell-Tissue Research and Application Center, Ege University, İzmir, Turkey
3. Department of Anatomy, Faculty of Medicine, Ege University, İzmir, Turkey
4. Seattle Science Foundation, Seattle, Washington, United States
5. Department of Neurosurgery, Adnan Menderes University School of Medicine, Aydın, Turkey