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The NINDS CDE Team has requested, and in many cases received, permission to post proprietary instruments/scales recommended by the CDE Working Groups to this site. When permission is granted, the documents are posted in the exact format they were received in order to maintain the validity of the instrument. If approval is not granted for the instrument to be reproduced on this site, with the author/copyright holder’s permission, a link is posted to an external Web site where users can get more information about the instrument. If you have difficulty accessing either the proprietary instruments/scales or the external links, please contact the NINDS Office of Clinical Research at email@example.com.