1. The Center for Pain Relief; Charleston West Virginia U.S.A
2. Carolinas Pain Institute and The Center for Clinical Research; Winston-Salem North Carolina U.S.A
3. Center for Interventional Pain and Spine, LLC; Newark Delaware U.S.A
4. MossRehab; Elkins Park Pennsylvania U.S.A
5. University of California; San Diego La Jolla California U.S.A
6. Napa Pain Institute; Napa California U.S.A
7. Jazz Pharmaceuticals; Palo Alto California U.S.A
8. Integrated Pain Solutions; Columbus Ohio U.S.A