1. Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD, USA.
2. Weldon School of Biomedical Engineering, Purdue University, West Lafayette, IN, USA.
3. Biomedical Engineering, University of Virginia, Charlottesville, VA, USA.
4. Department of Bioengineering, Rice University, Houston, TX, USA.
5. Department of Biomolecular Engineering and Department of Orthopaedic Surgery, University of Connecticutt, Storrs, CT, USA.
6. Department of Biomedical Engineering, University of Minnesota-Twin Cities, Minneapolis, MN, USA.