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Pope Francis listens as Cardinal Gianfranco Ravasi, president of the Pontifical Council for Culture, speaks during an audience with people participating in the "United to Cure Conference" at the Vatican April 28, 2018. Hundreds of physicians, researchers and health-care executives attended the April 26-28, 2018, conference to talk about medical advances and steps to promote health care around the world. (CNS/Vatican Media)