1. Department of Biomedical Engineering and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA
2. Virginia Tech-Wake Forest School of Biomedical Engineering and Science, Wake Forest University Health Sciences, Winston-Salem, NC, USA
3. Department of Electrical and Computer Engineering, University of Massachusetts Lowell, Lowell, MA, USA
4. Department of Physics and Astronomy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
5. Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Polytechnic Institute and State University, VA, USA