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                     PUBLIC DOMAIN NOTICE
         National Center for Biotechnology Information

This software is a "United States Government Work" under the terms of
the United States Copyright Act.  It was written as part of the
authors' official duties as United States Government employees and
thus cannot be copyrighted.  This software 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 authors in any work or product based on this material.

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