I know there is some interest in this procedure among our group. I became interested myself (purely theoretically) so I did a bit of research. The first link leads to Dr Sabine Ernst's trial which you will see is due to end in November. The second leads to a trial already completed. The third is a more accessible report about the second.
Before you read any of these please note that the Ernst trial is apparently different to the AFACT trial so if you are considering joining the Ernst trial the report from the completed trial may not be relevant to you.
I do not want to seem to be scaremongering but thought the techies among you might be interested. I know the trial participants are warned of any possible adverse effects in great detail!