1. Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL
2. Department of Orthopaedics, Shanghai Changzheng Hospital, Second Affiliated Hospital of Naval Medical University, Shanghai, China
3. Department of Biomedical Engineering, Illinois Institute of Technology, Chicago, IL
4. Department of Orthopaedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA
5. Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA
6. Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ