Oklahoma was a state with a small population, Mondino said, and "questions about race, number of children, other details can be used to identify a patient.

蒙德说，俄克拉荷马州人口并不多，“这些种族、家庭孩子数量和其它个人详细情况的问题，能够用来鉴别一名患者的身份。

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Only the past two censuses have allowed citizens to identify with more than a single race.

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After a typical race, the number on those bibs is used to identify which checked bags belong to whom.

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