1. aMurdoch Children’s Research Institute, Melbourne, Victoria, Australia
2. bDepartment of Neurosurgery, Austin Health, Melbourne, Victoria, Australia
3. cNeurosurgery, Cabrini Health, Melbourne, Victoria, Australia
4. dSport Injury Prevention Research Centre, Faculty of Kinesiology
5. eHotchkiss Brain Institute
6. fAlberta Children’s Hospital Research Institute, University of Calgary, Calgary, Alberta, Canada
7. gRoyal Children’s Hospital, Melbourne, Victoria, Australia
8. hDepartments of Paediatrics and Critical Care, University of Melbourne, Victoria, Australia
9. iUniversity of Queensland, Children's Hospital and Health Services,Brisbane, Queensland, Australia
10. jDepartment of Physical Medicine and Rehabilitation, Spaulding Rehabilitation Hospital/Harvard Medical School, Boston, Massachusetts
11. kUniversity of Padova, Padova, Italy
12. lUniversity of Michigan Concussion Center, Ann Arbor, Michigan
13. mUniversity Orthopedics Concussion Care Clinic, State College, Pennsylvania
14. nUniversity of Missouri - Kansas City, Kansas City, Missouri
15. oMcGill University, Montreal, Quebec, Canada
16. pMontreal Children’s Hospital, McGill University Health Center, Montreal, Quebec, Canada
17. qChildren’s National Hospital, Rockville, Maryland
18. rUCLA Mattel Children’s Hospital, Los Angeles, California
19. sUniversity at Buffalo Jacobs School of Medicine and Biomedical Sciences, Buffalo, New York
20. tUniversity of Pennsylvania Perelman School of Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
21. uMedical College of Wisconsin, Milwaukee, Wisconsin
22. vKU Leuven, Belgium
23. wSwansea University, Wales, United Kingdom
24. xBoston Children’s Hospital, Boston, Massachusetts
25. yDepartment of Pediatrics, McMaster University, Hamilton, Ontario, Canada
26. zMajor League Soccer, Princeton, New Jersey
27. aaSports Concussion Center of New Jersey, Princeton, New Jersey
28. bbMelbourne School of Psychological Sciences, University of Melbourne, Victoria, Australia
29. ccTurner Institute for Brain and Mental Health, School of Psychological Sciences, Monash University, Victoria, Australia
30. ddDepartment of Psychology, University of Calgary, Calgary, Alberta, Canada
31. eeChildren’s Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
32. ffWits Sport and Health (WiSH), School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa