*Department of Biomedical and Health Informatics, University of Missouri—Kansas City School of Medicine, Kansas City, Missouri;

†National Hockey League, New York, NY;

‡Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada;

§Toronto Rehabilitation Institute, University Health Network, Faculty of Kinesiology and Physical Education, University of Toronto, Toronto, ON, Canada; and

¶University Orthopedic Center, Concussion Care Clinic, University of Missouri—Kansas City, Kansas City, Missouri.

Corresponding Author: Jared M. Bruce, PhD, Department of Biomedical and Health Informatics, University of Missouri—Kansas City School of Medicine, 2411 Holmes Street, Kansas City, Missouri 64108 ([email protected]).

R. J. Echemendia is a paid consultant for the NHL and co-chair of the NHL/NHLPA Concussion Subcommittee. He is also a paid consultant for Major League Soccer and Princeton University Athletic Medicine. He is currently a co-PI for a grant funded by the NFL (NFL-Long) through Boston Children's Hospital and occasionally provides expert testimony in matters related to MTBI and sports concussion. W. Meeuwisse is the Chief Medical Officer for the NHL and an employee of the NHL. M. G. Hutchison is a member of the NHL/NHLPA Concussion Subcommittee and a consultant to the NHLPA, for which he receives remuneration. P. Comper is a member of the NHL/NHLPA Concussion Subcommittee and a paid consultant to the NHLPA. J. M. Bruce is a part-time employee of the NHL. J. M. Bruce also receives grant funding from Genzyme, and is a paid consultant for Med-IQ and Sporting KC. He has served as a consultant to EyeGuide. The remaining authors report no conflicts of interest.