When 9-year-old David Diaz was wheeled into surgery for a double-lung transplant, he had an advantage almost no one in his situation has: his sister had the same rare surgery just three years earlier.
When 9-year-old David Diaz was wheeled into surgery for a double-lung transplant, he had an advantage almost no one in his situation has: his sister had the same rare surgery just three years earlier.
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