Text and Data Mining valid from 2018-01-31
Received: 8 November 2017
Accepted: 22 January 2018
First Online: 31 January 2018
Ethics approval and consent to participate
: Institutional Review Board (IRB) approval was obtained prior to analysis (IRB# 120991). Written informed consent was obtained from the student-athlete and/or a parent/guardian.
: Not applicable.
: GS Solomon is a consultant for the Nashville Predators, Tennessee Titans, and the athletic departments of Tennessee Tech University and the University of Tennessee, fees paid to institution. He is also a consultant to the National Football League Department of Health and Safety. CM Bonfield serves as an unaffiliated neurotrauma consultant for the NFL. BL Brett, ZY Kerr, AW Kuhn, SL Zuckerman, and AM Yengo-Kahn declared no conflicts of interest.
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