1 Department of Neurosurgery, Neurosurgery Teaching Hospital, Baghdad, Iraq.
2 Department of Specialized Surgery, Pediatric Neurosurgery Section, Maternity and Children Hospital - Dammam, Saudi Arabia.
3 Department of Neurosurgery, Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Cleveland Clinic, Cleveland, Ohio, United States.
4 Medical Student, College of Medicine, The Hashemite University, Zarqa, Jordan.