1. Dental and Craniofacial Research Institute, University of California, Los Angeles, Los Angeles, California.
2. Department of Orthopaedics, First Clinical Hospital, Harbin Medical University, Harbin, China.
3. Division of Advanced Prosthodontics, Biomaterials, and Hospital Dentistry, University of California, Los Angeles, California.
4. Department of Bioengineering, University of California, Los Angeles, California.
5. Department of Orthopaedic Surgery, University of California, Los Angeles, California.