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The Controlled Access data tier contains data that may be unique to an individual. All data types are stripped of direct identifiers. The Controlled Access data tier requires user certification.

 

For more information see Access Tiers.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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