1. National Athletic Trainers' Association;
2. Gatorade Sports Science Institute;
3. American College of Sports Medicine;
4. Collegiate Strength and Conditioning Coaches association;
5. University of Oklahoma, Retired;
6. National Strength and Conditioning Association;
7. *American Osteopathic Academy of Sports Medicine;
8. American Medical Society for Sports Medicine;
9. †American College of Emergency Physicians;
10. ‡National Collegiate Athletic Association;
11. §Canadian Athletic Therapists' Association;
12. Korey Stringer Institute; ¶¶National Academy of Sports Medicine