1. Department of Stomatology, Beijing Shijitan Hospital, Capital Medical University, Beijing 100038, China
2. Department of Stomatology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China
3. Department of Immunology, School of Basic Medical Sciences, Advanced Innovation Center for Human Brain Protection, Beijing Key Laboratory for Cancer Invasion and Metastasis, Department of Oncology, Capital Medical University, Beijing 100069, China
4. Department of Periodontology, Tianjin Stomatological Hospital and Tianjin Key Laboratory of Oral Function Reconstruction, Hospital of Stomatology, Nankai University, Tianjin 300041, China