1. Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
2. Guangdong Provincial Key Laboratory of Stomatology, Guangzhou 510080, China
3. Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510080, China
4. State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China