1. Department of Orthopaedics University of Maryland Baltimore Maryland USA
2. Department of Orthopaedic Surgery, Graduate School of Biomedical and Health sciences Hiroshima University Hiroshima Japan
3. Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory University of Pennsylvania Philadelphia Pennsylvania USA
4. Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital Southern Medical University Guangzhou China
5. Fischell Department of Bioengineering University of Maryland College Park Maryland USA