1. Department of Periodontal and Oral Medicine College of Stomatology Guangxi Medical University Nanning China
2. Guangxi Health Commission Key laboratory of prevention and treatment for oral infectious diseases Guangxi Medical University Nanning China
3. Stomatology Hospital School of Stomatology, Cancer Center Zhejiang University School of Medicine, and Key Laboratory of Oral Biomedical Research of Zhejiang Province Clinical Research Center of Oral Diseases of Zhejiang Province Hangzhou China