Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Memo from UNC-Chapel Hill Privacy Officer to other Covered
Entities regarding Disclosures of PHI to UNC Chapel Hill Researchers.
This memo is available for researchers to print and share with covered
entities who may be uncertain about what documentation from UNC-Chapel
Hill is required for HIPAA-compliant release of PHI to UNC-Chapel Hill
researchers.