1. Department of Surgery; Vanderbilt University; Nashville TN USA
2. Department of Physics; Vanderbilt University; Nashville TN USA
3. Department of Physics; Lipscomb University; Nashville TN USA
4. Auckland Bioengineering Institute; University of Auckland; Auckland New Zealand
5. Department of Physics-Engineering; Washington & Lee University; Lexington VA USA
6. Department of Surgery; University of South Alabama; Mobile AL USA