1. College of Biotechnology, Tianjin University of Science and Technology, Tianjin, China
2. Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin University of Science and Technology, Tianjin, China
3. Stomatology Department, Binhai Hospital of Peking University, Tianjin, China
4. Central Laboratory, Binhai Hospital of Peking University, Tianjin, China
5. Periodontal Disease Department, Tianjin Stomatological Hospital, Tianjin, China
6. Oral and Skin Microecology Institute of Tust & Benzhen, Science and Technology Park of Tianjin University of Science and Technology, Tianjin, China