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Now lets go to the evidence on efficacy and effectiveness. And now we really move to the absolutely highest level of evidence. Thats the patient-level data meta-analysis. This project is led by Andrew Vickers, and this is really drawing collaboration where we have pulled data and its funded by NCCAM. What have we done? We have pulled data from several countries. And you can see here the majority of data is coming from Europe, and especially from Germany, that just due to the fact that we had this large acupuncture initiatives where they have insurance companies sponsor a lot of acupuncture research. But we have also two trials from the States included in this data set. Thats a trial by Berman and a trial by Cherkin. So 31 studies on chronic pain have been eligible to be included in the meta-analysis. All had good allocation concealment and randomization. We only took randomized trials, and we ended up with nearly 18,000 patients in the data set. Eighteen trials had a non-acupunct