r#"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 author in any work or product based on this material.
"#