How a 3-D printer changed a 4-year-old’s heart — and life
By Carina Storrs Special to CNN MIAMI -- Mia Gonzalez spent the first 3½ years of her life missing out. She had to skip day care and dance classes because she constantly had colds and pneumonia. When Mia could go out and play, she was easily winded and took multiple asthma medications to try to help her breathing.