1. a Center for Biomedical Engineering , University of Kentucky , Lexington, KY, 40506, USA
2. b Virginia Tech – Wake Forest School of Biomedical Engineering and Sciences , Virginia Tech , Blacksburg, VA, 24061, USA
3. c Industrial and Systems Engineering , Virginia Tech , Blacksburg, VA, 24061, USA
4. d Engineering Science and Mechanics , Virginia Tech , Blacksburg, VA, 24061, USA