http://www.startribune.com/for-mayo-scientist-spinal-injury-research-is-personal/501182611/
In September, Peter Grahn and his Mayo colleagues published a globally recognized breakthrough: using electrical stimulation and therapy exercises to help a paralyzed man walk the approximate length of a football field. Peter Grahn has faced the same question for a dozen years since he dived as a reckless teen into a southwest Minnesota lake, slammed headfirst into the shallow bottom, and floated — face down and motionless — on the surface…