I have not done it but i am reading about it allot and there is some good information on the internet.
Currently i am reading Paul Knoepfler's book Stem Cells insider's guide.

A preliminary report on stem cell therapy for neuropathic pain in humans
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4020887/

Did you do your homework?And i would love to hear from you how it goes