1. Department of Oral and Maxillofacial Diseases, Helsinki University Hospital, Helsinki, Finland
2. Centre for Public Health, Queen’s University Belfast, Belfast, UK
3. GC Corporation, Tokyo, Japan
4. WHO Collaborating Centre for Translation of Oral Health Science, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
5. Edinburgh Dental Institute, University of Edinburgh, Edinburgh, UK
6. Barts and The London School of Medicine and Dentistry, London, UK