1. Professor of Primary Dental Care, University of Birmingham School of Dentistry, 5 Mill Pool Way, Birmingham B5 7EG
2. General Dental Practitioner, Birmingham, Clinical Lecturer, University of Birmingham School of Dentistry and Head Dental Officer, Denplan, Winchester
3. General Dental Practitioner, Abingdon, and Part-Time Lecturer, University of Birmingham, School of Dentistry, 5 Mill Pool Way, Birmingham B5 7EG, UK