1. Comprehensive Dental Care (Endodontics); Faculty of Dentistry; The University of Hong Kong; Hong Kong China
2. Periodontology; Fujian Medical University School of Stomatology; Fujian China
3. HKU Shenzhen Institute of Research and Innovation; Hong Kong China
4. Oral Microbiomics and Infection; School of Dentistry; University of Queensland; Brisbane Qld Australia
5. Periodontology and Public Health; Faculty of Dentistry; The University of Hong Kong; Hong Kong China