Low risk of concussions in top-level karate competition
Rafael Arriaza, Dusana Cierna, Patricia Regueiro, David Inman, Franco Roman, Benjamin Abarca, Mercé Barrientos, Miguel A Saavedra
British Journal of Sports Medicine Feb 2017, 51 (4) 226-230; DOI: 10.1136/bjsports-2016-096574