Systematic review and meta-analysis of the effects of football heading
Anthony P Kontos, Rock Braithwaite, Sara P D Chrisman, Jamie McAllister-Deitrick, Larissa Symington, Valerie L Reeves, Michael W Collins
British Journal of Sports Medicine Aug 2017, 51 (15) 1118-1124; DOI: 10.1136/bjsports-2016-096276