What is the definition of sports-related concussion: a systematic review
Paul McCrory, Nina Feddermann-Demont, Jiří Dvořák, J David Cassidy, Andrew McIntosh, Pieter E Vos, Ruben J Echemendia, Willem Meeuwisse, Alexander A Tarnutzer
British Journal of Sports Medicine Jun 2017, 51 (11) 877-887; DOI: 10.1136/bjsports-2016-097393