Does fair play reduce concussions? A prospective, comparative analysis of competitive youth hockey tournaments
Aynsley M Smith, Daniel V Gaz, Dirk Larson, Janelle K Jorgensen, Chad Eickhoff, David A Krause, Brooke M Fenske, Katie Aney, Ashley A Hansen, Stephanie M Nanos, Michael J Stuart
BMJ Open Sport & Exercise Medicine Mar 2016, 2 (1) e000074; DOI: 10.1136/bmjsem-2015-000074
