This software is "United States Government Work" under the terms of
the United States Copyright Act.  It was written as part of the authors'
official duties for the United States Government and thus cannot be
copyrighted.  This software is freely available to the public for
use without a copyright notice.  Restrictions cannot be placed on its present
or future use. 

Although all reasonable efforts have been taken to ensure the accuracy and
reliability of the software and data, the National Human Genome Research
Institute (NHGRI) and the U.S. Government does not and cannot warrant the
performance or results that may be obtained by using this software or data.
NHGRI and the U.S. Government disclaims all warranties as to performance,
merchantability or fitness for any particular purpose. 

In any work or product derived from this material, proper attribution of the
authors as the source of the software or data should be made, using "NHGRI
Genome Technology Branch" as the citation. 
