                          PUBLIC DOMAIN NOTICE
             National Center for Biotechnology Information

This software/database is a "United States Government Work" under the
terms of the United States Copyright Act.  It was written as part of
the author's official duties as a United States Government employee and
thus cannot be copyrighted.  This software/database is freely available
to the public for use. The National Library of Medicine and the U.S.
Government have not placed any restriction on its use or reproduction.

Although all reasonable efforts have been taken to ensure the accuracy
and reliability of the software and data, the NLM and the U.S.
Government do not and cannot warrant the performance or results that
may be obtained by using this software or data. The NLM and the U.S.
Government disclaim all warranties, express or implied, including
warranties of performance, merchantability or fitness for any particular
purpose.

Please cite the author in any work or product based on this material.
