1. Department of Mechanical Engineering, California Polytechnic State University, San Luis Obispo, CA 93407, USA
2. School of Engineering, College of Aviation, Embry-Riddle Aeronautical University World Campus, 1 Aerospace Boulevard, Daytona Beach, FL 32114, USA
3. Department of Orthopedic Surgery, University of California-Irvine, Orange, CA 92868, USA
4. Biomedical Engineering, California Polytechnic State University, San Luis Obispo, CA 93407, USA