title: Ice hockey concussion rates: a case for playing by the rules.
authors.forename: William O
authors.initials: WO
authors.lastname: Roberts
mesh_terms: D000056:Accident Prevention / Q000379:methods*; D001265:Athletic Injuries / Q000453:epidemiology / Q000517:prevention & control; D001924:Brain Concussion / Q000453:epidemiology* / Q000517:prevention & control*; D006260:Head Protective Devices / Q000706:statistics & numerical data; D006688:Hockey / Q000293:injuries*; D006801:Humans; D015994:Incidence; D009064:Mouth Protectors / Q000706:statistics & numerical data; D014481:United States / Q000453:epidemiology