1. Specialist Registrar in Paediatric Dentistry, Paediatric Dentistry Unit, Cardiff University Dental Hospital, Heath Park, UK
2. Clinical Reader and Honorary Consultant in Paediatric Dentistry, Dental Health and Biological Sciences, Wales College of Medicine, School of Dentistry, Heath Park, Cardiff CF14 4XY, UK
3. Senior Lecturer/Honorary Consultant and Programme Director, Department of Paediatric Dentistry, Eastman Dental Institute, 256 Gray's Inn Road, London WC1X 8LD, UK