1. Department of Periodontology Affiliated Stomatology Hospital of Guangzhou Medical University Guangzhou Guangdong China
2. Key Laboratory of Oral Medicine, Guangzhou Institute of Oral Disease Affiliated Stomatology Hospital of Guangzhou Medical University Guangzhou Guangdong China
3. Clinic of Reconstructive Dentistry University of Zurich Zurich Switzerland
4. Department of Conservative Dentistry Faculty of Dentistry, University of Chile Santiago Chile
5. Department of Oral Biology Medical University of Vienna Vienna Austria
6. Department of Periodontology Research Institute for Periodontal Regeneration, College of Dentistry, Yonsei University Seoul Republic of Korea
7. Innovation Research and Support Center for Dental Science Yonsei University Dental Hospital Seoul Republic of Korea