You might want to read this article by marc Stecker, Wheelchair Kamikazee
, on the very public outing of a stem cell scam - http://www.wheelchairkamikaze.com/2015/01/a-stem-cell-scam-unravels.html
And then share it with your husband. there are only a few FDA approved stem cell studies taking place right now in the US. I understand you hubby's desire to find anything to help you, which is so sweet. But ask him to learn more about stem cell therapy before signing you up.