1. Department of Orthopaedic Surgery, Perelman School of Medicine University of Pennsylvania Philadelphia PA USA
2. Departent of Orthopaedics, Union Hospital, Tongji Medical College Huazhong University of Science and Technology Wuhan China
3. Department of Orthopaedic Surgery, Qilu Hospital, Cheeloo College of Medicine Shandong University Jinan China
4. School of Biomedical Engineering, Science and Health Systems Drexel University Philadelphia PA USA
5. Schulich School of Medicine and Dentistry University of Western Ontario London Canada
6. Department of Orthopaedics, School of Medicine University of Maryland Baltimore MD USA
7. Department of Orthopaedic Surgery University of Michigan Ann Arbor MI USA