FILE - In this Aug. 7, 2017, file photo, Stephanie Richurk, a nurse at the University of Pittsburgh Medical Center, sorts blood samples collected from participants in the "All of Us" research program in Pittsburgh. The National Institutes of Health announced on Tuesday, May 1, 2018, that it will open nationwide enrollment and is seeking 1 million volunteers to share their DNA and medical records. (AP Photo/Dake Kang, File)
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