1. Department of Neurosurgery, Salmaniya Medical Complex, Manama, Bahrain
2. Department of Neurosurgery, Neurosurgery Teaching Hospital, Baghdad, Iraq
3. Department of Neurosurgery, University of Cartagena, Cartagena de Indias, Cartagena
4. Department of Neurosurgery, Cartagena Neurotrauma Research Group, Colombia