Table 1 (From Paper) (IMAGE) Journal of Neurosurgery Publishing Group Caption This is a comparison of biomarker serum-level changes between the high-acceleration head impact (HHI) and non-HHI groups. Credit © 2018 American Association of Neurological Surgeons Usage Restrictions Permission must be obtained to reuse. Contact Jo Ann at joanneliason@thejns.org. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.