In this April 17, 2015 photo, Yuichi Imahata walks using a robotic exoskeleton called ReWalk at Kanagawa Rehabilitation Center in Atgugi, west of Tokyo. Imahata, 31, has been using a wheelchair to get around for seven years after a serious spinal-cord injury suffered in an accidental fall while working for a transport company. He completely lost sensation in both his legs and was told he would never walk again. (AP Photo/Shuji Kajiyama)
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