1Department of Mechanical Engineering, The University of Texas at Dallas, Richardson, TX 75080, U.S.A.
5Department of Bioengineering, The University of Texas at Dallas, Richardson, TX 75080, U.S.A.
6Department of Surgery, University of Texas at Southwestern Medical Center, Dallas, TX 75080, U.S.A.
7Center for Advanced Pain Studies, The University of Texas at Dallas, Richardson, TX 75080, U.S.A.
