1. School of Mechanical Engineering, Purdue University, West Lafayette, Indiana, USA
2. Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
3. School of Industrial Engineering, and Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana, USA
4. Donald W. Feddersen Distinguished Professor in Mechanical Engineering, and School of Electrical and Computer Engineering, Purdue University, West Lafayette, Indiana, USA