1. Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, USA
2. Orthopaedic Hospital Research Center, Orthopaedic Hospital Department of Orthopaedic Surgery, and David Geffen School of Medicine, University of California Los Angeles, USA
3. Chemical Sciences Center, Sandia National Laboratories, USA
4. Departments of Mechanical and Aerospace Engineering and Orthopaedic Surgery, University of California Los Angeles, USA