1. Department of Orthopedics, Tianjin Hospital, Tianjin, People's Republic of China.
2. Mary and Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, Nebraska.
3. Tissue Engineering Labs of Orthopedics Institute, Tianjin Hospital, Tianjin, People's Republic of China.
4. Division of Cardiology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
5. Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska.
6. Division of Oral and Maxillofacial Surgery, Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
7. Department of Surgery, College of Medicine, University of Nebraska Medical Center, Omaha, Nebraska.
8. Department of Mechanical and Materials Engineering, University of Nebraska-Lincoln, Lincoln, Nebraska.