1. Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran
2. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
3. Research Committee of Faculty of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
4. Department of Neurosurgery, Lorestan University of Medical Sciences, Khorramabad, Iran
5. Department of Health Information Management, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
6. International Neurosurgery Group (ING), Universal Scientific Education and Research Network (USERN), Tehran, Iran
7. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
8. Students’ Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
9. Department of Neurosurgery, Arak University of Medical Sciences, Arak, Iran
10. Trauma Research Center, Kashan University of Medical Sciences, Kashan, Iran
11. Guilan Road Trauma Research Center, Guilan University of Medical Sciences, Rasht, Iran
12. Patient Safety Research Center, Clinical Research Institute, Urmia University of Medical Sciences, Urmia, Iran
13. Research Center for Evidence Based Medicine, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
14. Road Traffic Injury Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
15. Shahid Rahnemoun Hospital, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
16. Department of Nursing, School of Nursing, Arak University of Medical Sciences, Arak, Iran
17. Department of Neurosurgery, Imam Hossein Hospital, Shahroud University of Medical Sciences, Shahroud, Iran
18. Sina Hospital, Tehran University of Medical Sciences, Tehran, Iran
19. Department of Neurological and Orthopedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
20. Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
21. Universal Scientific Education and Research Network (USERN), Tehran, Iran
22. Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran