1. Department of Orthopedics and Traumatology, University Hospital Queen Giovanna‐ISUL Medical University of Sofia Sofia Bulgaria
2. Department of Anatomical Sciences St. George's University True Blue Grenada
3. Department of Neurosurgery Tulane University School of Medicine New Orleans Louisiana USA
4. Department of Neurology Tulane University School of Medicine New Orleans Louisiana USA
5. Department of Structural and Cellular Biology Tulane University School of Medicine New Orleans Louisiana USA
6. Department of Surgery Tulane University School of Medicine New Orleans Louisiana USA