1. Sports Medicine Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
2. Brain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran
3. Department of Neurosurgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
4. Department of Sports and Exercise Medicine, Imam Khomeini Hospital, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
5. Iran Football Medical Assessment and Rehabilitation Center (IFMARC), Tehran, Iran
6. Department of Sport and Exercise Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
7. Department of Orthopaedics, Stanford University, Stanford Orthopedics, Redwood City, CA, USA