1. Department of Orthodontics, Beijing Stomatological Hospital, Capital Medical University, Beijing, China.
2. Department of Oral and Maxillofacial Surgery, Beijing Stomatological Hospital, Capital Medical University, Beijing, China.
3. Biomaterials & Tissue Engineering Division, Department of Advanced Oral Sciences and Therapeutics, University of Maryland School of Dentistry, Baltimore, Maryland, USA.
4. Department of Orthopedic Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, China.
5. Center for Stem Cell Biology & Regenerative Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA.
6. Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, Maryland, USA.