A young athlete collides with an opponent. The play ends. The athlete walks from the field of play in an unsteady fashion. The medical staff begins the process of assessment. And the questions begin: Are you OK? What's wrong? How many fingers? What do you remember?"
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Douglas B. McKeag (2003) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: