My pulmonologist told me about that exact same study. Apparently that is either the only or one of the only studies done yet. I'm kinda skeptical just bc thats such a small study. I did some reading up on it on forums & got the impression that it can be helpful during the beginning of RSD & can reduce pain a few points, but not a miracle & doesnt work once you have had RSD long. I hope I am wrong & that it works. I posted about this too, maybe you can find others responses on there. Hope it works for you.