1. Centre for Immunobiology & Regenerative Medicine and Centre for Oral Clinical Research; Institute of Dentistry, Barts and the London School of Medicine and Dentistry; Queen Mary University of London (QMUL); London UK
2. Department of Periodontology; Faculty of Dentistry; Suzhou Health College; Suzhou China
3. Institute of Epidemiology and Preventive Medicine; College of Public Health; National Taiwan University; Taipei Taiwan