Rob Bart remembers what it felt like, the moment of discovery. As an intern at Duke University Medical Center in the ’90s, he’d sometimes be tasked with poring through a patient’s medical history to uncover the cause of their latest hospitalization. Back then, the stacks of paper records could tower 18 inches tall. “I can remember that needle in the haystack feeling,” said Bart, now chief medical information officer at the University of Pittsburgh Medical Center, “when you found that one thing in the medical record that helps us figure this out.”

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