1. Department of Orthopaedic Surgery, Huaxi Hospital, Sichuan University, Chengdu, China.
2. Tissue Engineering, VA Boston Healthcare System, Boston, Massachusetts.
3. Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts.
4. Harvard Medical School, Boston, Massachusetts.
5. Whitaker Cardiovascular Institute, Boston University School of Medicine, Boston, Massachusetts.