Some percent may have concussions.Logical formLearned from2 sentences. Persons may experience a concussion.Logical formLearned from2 sentences. Concussions can be strident.Logical formLearned from2 sentences. Concussions can be frightful.Logical formLearned from2 sentences. A person may hear a concussion.Logical formLearned from2 sentences. A secret of a concussion may break upon persons.Logical formLearned from2 sentences. A concussion may burst through a night.Logical formLearned from2 sentences. A sort may undergo a concussion.Logical formLearned from2 sentences. A journalist may suffer a concussion.Logical formLearned from2 sentences. (Research interests) may revolve around concussion.Logical formLearned from2 sentences. A concussion of a bomb may throw_in a person.Logical formLearned from2 sentences. A study can be constituted-of-or-filled-with concussion.Logical formLearned from2 sentences. A risk can be for concussions.Logical formLearned from2 sentences. Cornerback may leave a game with a concussion.Logical formLearned from2 sentences. A concussion may be caused.Logical formLearned from2 sentences.