title: Heavy hitting: concussions and safety law.
authors: Michael
authors: M
authors: Monette
mesh_terms: D001924:Brain Concussion; D002170:Canada; D006259:Craniocerebral Trauma; D005538:Football / Q000293:injuries / Q000331:legislation & jurisprudence; D006688:Hockey / Q000293:injuries* / Q000331:legislation & jurisprudence*; D006801:Humans; D016272:Occupational Health / Q000331:legislation & jurisprudence*; D014481:United States