1. Faculty of Dentistry; Implant Dentistry, Oral Rehabilitation; The University of Hong Kong; Prince Philip Dental Hospital; Hong Kong SAR China
2. Faculty of Dentistry; Oral Biosciences; The University of Hong Kong; Prince Philip Dental Hospital; Hong Kong SAR China
3. Periodontology; School of Dental Medicine; University of Bern; Bern Switzerland
4. Dental Public Health; Faculty of Dentistry; The University of Hong Kong; Prince Philip Dental Hospital; Hong Kong SAR Hong Kong