1. College of Stomatology, Hospital of Stomatology, Guangxi Medical University, No. 10 Shuangyong Road, Nanning 530021, Guangxi, China
2. Medical Science Research Center, Guangxi Medical University, Nanning 530021, Guangxi, China
3. Guangxi Key Laboratory of Oral and Maxillofacial Rehabilitation and Reconstruction, Guangxi Medical University, Nanning 530021, Guangxi, China