title: Unreported concussion in high school football players.
authors.forename: James G
authors.initials: JG
authors.lastname: Garrick
mesh_terms: D001265:Athletic Injuries / Q000453:epidemiology*; D001924:Brain Concussion / Q000453:epidemiology*; D005538:Football / Q000293:injuries* / Q000706:statistics & numerical data; D006306:Health Surveys; D006801:Humans; D015995:Prevalence; D020127:Recovery of Function