Other uses and disclosures of medical information not covered by this notice or the laws that apply to us will be made only with your written permission. If you provide us permission to use or disclose medical information about you, you may revoke that permission, in writing, at any time. If you revoke your permission, we will no longer use or disclose medical information about you for the reasons covered by your written authorization. You understand that we are unable to take back any disclosures we have already made with your permission and that we are required to retain our records of the care that we provided to you.