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Upcoming Login Change: On or about August 24, CDAS will begin using the NIH Researcher Auth Service (RAS) to manage our existing login options. When logging into CDAS, you will be taken to RAS, where you can select your preferred login provider to access CDAS.

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The National Institutes of Health (NIH) has implemented new IT security requirements to improve data security. This mandate includes integration of identity verification into NIH IT applications. You are now required to verify your identity in order to access CDAS.

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