I am seeing a psychiatrist MD who does a lot of TMS, and I researched and sent him many articles (I am a physician), but he is reluctant to try it. There is some medical literature out there that indicates the specific areas to treat, voltage, alternating current, what areas of the brain should be used, how long, etc. I don't understand how slowly the research moves with a condition that so common and life altering. There are certainly enough PWS out there who would be more than willing to try something other than speech therapy for stuttering. It is really a medical/neurologic condition.