1. Division of Emergency Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA.
2. Invicro, Needham, Massachusetts, USA.
3. University of Rochester School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, New York, USA.
4. Biogen, Cambridge, Massachusetts, USA.
5. Department of Pediatrics, Harvard Medical School, Boston, Massachusetts, USA.
6. Division of Sports Medicine, Boston Children’s Hospital, Boston, Massachusetts, USA.
7. The Micheli Center for Sports Injury Prevention, Waltham, Massachusetts, USA.