it's a growing business, and importantly with patients out of pocket dollars, doesn't it tell something? FDA really needs to get it's act together fast to establish guidelines n document what each type of approval really means in commercial use. blanket closure of all seems not an option at this stage after allowing this far.. only regulating guidelines with enforcement is the only option IMHO, so leading companies like $USRM succeeding is not an if but when.
so leaving it to people's imagination the scale of money flowing, revenues with FDA approved procedures n insurance covering them.