1. Sina Trauma and Surgery Research Center, Tehran University of Medical Sciences, Tehran, Iran;
2. Faculty of Medicine, Students’ Scientific Research Center, Tehran University of Medical Sciences, Tehran, Iran;
3. Non-Communicable Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran;
4. Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran;
5. Department of Biostatistics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran;
6. Universal Network of Interdisciplinary Research in Oral and Maxillofacial Surgery (UNIROMS), Universal Scientific Education and Research Network (USERN), Tehran, Iran;
7. Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran;
8. Center for Health Related Social and Behavioral Sciences Research, Shahroud University of Medical Sciences, Shahroud, Iran;
9. Department of Surgery, Kaiser Permanente, Fontana, CA, USA;
10. Department of Surgery, Arrowhead Regional Medical Center, Colton, CA, USA;
11. Preventive Medicine and Public Health Research Center, Iran University of Medical Sciences, Tehran, Iran;
12. Institute for Health Metrics and Evaluation, University of Washington, Washington, USA;
13. Department of Epidemiology and Preventive Medicine, School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia;
14. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran;
15. Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran