I became aware of them watching a documentary upon Hitler many years ago - he was a fan of them apparently. Though wasn't aware at the time and quick dig shows it's not something the health service in the UK offer even today. Alas I can't afford private health care and not had great experiences with doctors, indeed any dealing been disaster on some level that I won't go thru them as it will just depress the hell out of me though the one when the a doctor said the stitches I'd had done was the worst job he'd seen in his entire life and he was a field medic during WW2, kinda gives an idea.

But certainly as a treatment - it has merit and wished was explored more. Just wished known about it at the time.