When you visit our site, we do not obtain information that will allow us to identify you personally unless you choose to provide such information to us.

To help us improve the site, we collect statistics about its usage. None of this information identifies individual users or associates individuals with the pages they visit. We also collect search terms to learn the topics that are of most interest to visitors using our search tools. These search terms are not associated with individual users.

Unless it is specifically stated otherwise, we will not collect any additional information about you. When inquiries are e-mailed to us, we store the question and the e-mail address so we can respond electronically if required. We do not store or use this information for any other purpose.

Unless required by law, we do not publicly identify those who send questions or comments to our site, nor is this information shared with any other public or private entity.

Questions about National Institutes of Health (NIH) privacy policies should be sent to the NIH Privacy Act Officer.