Multi-level ADR has been performed hundreds of times in the U.S. And yes, there are many reasons why Ritter Lang should be avoided. He is one of the very few I recommend any patient to steer away from! He is responsible for dozens of injuries and complications.
For more details on this, see:
https://www.adrsupport.org/forums/sh...ad.php?t=11016
and especially:
https://www.adrsupport.org/forums/sh...ad.php?t=10330