Boy 'lived as a robot' for two months
15 April 2013 Last updated at 09:50 BST
For two months, Grady Hofmann lived vicariously through a robot.
In the spring of 2012, the then eight-year-old was told he needed a bone marrow transplant. After the surgery, he would be confined to a small isolation room in a hospital.
Sumi Das reports on how the robot helped him live his life at home and in the classroom while being confined to a hospital bed.
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