1. Salivary Gland Disease Center and Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Beijing, China
2. Department of Oral and Maxillofacial Surgery, Xiangya Hospital, Central South University, Changsha, China
3. National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, Maryland, USA
4. Department of Immunology, Capital Medical University, Beijing, China
5. Department of Biochemistry and Molecular Biology, Capital Medical University School of Basic Medical Sciences, Beijing, China