Upon request, you may limit the amount of time that this consent for release of information is valid. You may revoke his authorization and writing at any time. I understand that the revocation will not apply to information that has already been released. I understand that authorizing the disclosure of this information is voluntary. I can refuse to sign authorization and note that I do not need to sign for shot treatment. I understand that any disclosure of information carries with it the potential for unauthorized re-disclosure by the recipient. Photocopies or facsimile of this authorization shall be considered in agreement like the original document.