The National Institutes of Health (NIH) is making every effort to ensure that the information available on our website is accessible to all. If you use special adaptive equipment to access the Web and encounter problems when using our site, please let us know. Write to, and we will attempt to provide the information to you in a suitable format. It would be helpful if you can be as specific as possible when describing the information you seek.

If you prefer to call, our main number is 301 496-4000 or you can first review our list of toll-free numbers:

If you need help accessing a PDF document, Adobe® offers conversion tools at its Accessibly Resource Center.

For NIH employees who need assistance with accessibility, please contact the equal employment opportunity officer in your institute or center.

To learn more about the regulations governing the accessibility of Federal electronic information products, visit the United States Access Board or the official Section 508 page.

Thanks for using this website.

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This page last updated: May 2, 2007