1. Department of Biomedical Engineering, Duke University, Durham, North Carolina 27708;,
2. Center for Genomic and Computational Biology, Duke University, Durham, North Carolina 27708
3. Department of Bioengineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801;
4. Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
5. Department of Orthopaedic Surgery, Duke University Medical Center, Durham, North Carolina 27710