1. Department of Orthopedic Surgery, Columbia University, New York, NY, 10032, USA.
2. Department of Orthopedic Surgery, Washington University in St. Louis, St. Louis, MO, 63130, USA.
3. School of Dental Medicine, Harvard University, Cambridge, MA, 02138, USA.
4. Department of Biomedical Engineering, Columbia University, New York, NY 10027, USA.