@Portugal25, thanks for the advice. I was afraid the stem cell thing was just marketing hype, but that is why I was asking if anyone had any experience with it.
In regards to your recommendation, to confirm, is it Raymond J. Konior in Chicago you are referring to? (https://www.chicagohairinstitute.com/about-the-practice/about-the-doctor)
I also looked up Dr. Juan Couto from Madrid, Spain but it looks like he's literally booked until 2023.....! Any recommendations for someone with a waiting list that is in months, not years?
Thanks again.