1. Department of Orthopaedic Surgery; Stanford University; Stanford California
2. Laboratoire de Biomécanique et Biomatériaux Ostéo-Articulaires − UMR CNRS 7052; Faculté de Médecine − Université Paris7; Paris France
3. Department of Oral and Maxillofacial Surgery; University of Chile; Santiago Chile
4. Department of Medicine, Clinicum, University of Helsinki; and Helsinki University Hospital; Helsinki Finland
5. Department of Bioengineering; Stanford University; Stanford California