How to Opt Out or Disable Cookies <p>If you do not wish to have session or persistent cookies placed on your computer, you can disable them at any time from your web browser. If you opt out of cookies, you will still have access to all information and resources at NLM, but you may not be able to use cookie-dependent features.</p> <p>See USA.gov’s Web Measurement and Customization Opt-Out page for instructions on disabling or opting out of cookies in the most popular browsers. Please note when you disable cookies from your web browser, you will disable cookies from all sources, not just those from NLM.</p> Personally Identifiable Information (PII) <p>