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The information contained on the National Sleep Foundation (NSF) Web site is for informational and educational purposes only, and is not intended to be used for diagnosis or treatment of any medical condition or to otherwise replace medical advice by qualified health professionals. NSF encourages all individuals to make informed decisions about their health, safety, and well being by consulting with health professionals and other reputable sources before making significant lifestyle changes, including but not limited to alterations in diet, exercise, sleep habits, medications, and herbal or other substances.

The Foundation's staff, Board of Directors, volunteers, and other agents disclaim any direct, indirect, consequential, special, exemplary, or other damages arising from any person following the information provided within or throughout the NSF Web site with respect to any diagnosis, treatment, action, or application of medication or other preparation. NSF does not endorse specific products or services, and any implications as such are unintentional.

NSF attempts to collect and provide information that is based on scientific data, principles, theories and dialogues. However, NSF does not guarantee that the information contained on this Web site or published elsewhere is free from all errors and omissions.

Unless otherwise noted, all products appearing on this Web Site are the copyrighted works of the National Sleep Foundation. Permission to make copies for purposes other than one's self-knowledge must follow the NSF Standard Operating Procedure Copyright and Reproduction of NSF Products. Guidelines include, but are not limited to:

   1. The content of the product shall not be altered in any way or be associated with content that may be misleading, inaccurate, biased or be viewed as an endorsement of any product.
   2. NSF must be cited as the source, and the NSF copyright notice must be published within the context of the product, including all NSF tables, charts, artworks and other graphics that accompany the written product.
   3. NSF products may not be used by another entity to produce revenue for that organization.

Requests for permission to reproduce must be submitted in writing; if approved, notice will be granted in writing by NSF.

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