**Public Domain Notice**
This software is a United States Government Work. Anyone may use the software on a worldwide and royalty-free
 basis for any purpose and anyone may reproduce and prepare derivative works without restriction. Although all
 reasonable efforts have been taken to ensure the accuracy and reliability of the software, the National Human Genome
 Research Institute (NHGRI), National Institutes of Health (NIH) and the U.S. Government do not and cannot warrant the
 performance or any results that may be obtained by using this software. NHGRI, NIH and the U.S. Government disclaim
 all warranties as to performance, merchantability or fitness for any particular purpose.  No indemnification is
 intended or provided by the US government.

In any work produced using or in any product derived from this material, the authors would appreciate being
 acknowledged per scientific custom as the source of the software.
