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A 2-year-old girl born without a windpipe now has a new one grown from her own stem cells, the youngest patient in the world to benefit from the experimental treatment. Hannah Warren has been unable to breathe, eat, drink or swallow on her own since she was born in South Korea in 2010. Until the operation at Children's Hospital of Illinois in Peoria, she had spent her entire life in a hospital in Seoul. "We feel like she's reborn," said Hannah's father, Darryl Warren.