1. Review of typical ice hockey injuries—Survey of the North American NHL and hockey Canada versus European leagues;Biasca;Unfallchirurg,1995
2. Concussions in college football;Buckley;The American Journal of Sports Medicine,1988
3. Accidents with horses: What has changed in 20 years?;Chitnavis;Injury,1996
4. The National Athletic Injury/Illness Reporting System (NAIRS);Clarke,1977
5. Football helmets and neurotrauma—an epidemiological overview of three seasons;Clarke;Med Sci Sports Exerc,1979