1. School of Dentistry, University of Manchester, Manchester, UK
2. J.E. Cairnes School of Business and Economics, National University of Ireland, Galway, Ireland
3. Health & Social Care Board of Northern Ireland, Belfast, UK
4. Centre for Health Economics, University of Manchester, Manchester, UK
5. Northern Health & Social Care Trust, Antrim, UK
6. General Dental Practitioner, Ballycastle, UK
7. British Dental Association Northern Ireland, Belfast, UK
8. Northern Ireland Clinical Trials Unit, Belfast Health & Social Care Trust, Belfast, UK