To preliminarily determine if you are eligible for this study, we first need to ask a few brief questions. None of the responses will be recorded and you will not be asked to provide any personal information outside of your zip code, which is necessary to determine eligibility for this study. If your answers indicate that you may be eligible for the study, then we will provide a short form that your doctor must complete to confirm eligibility. If you have any questions, then please contact us via email at PainTech@cshs.org or call us at 310-423-0684..