1. General Dental Practitioner, Antley Villa Dental Practice, 432 Blackburn Road, Accrington, Lancashire
2. Lecturer in Restorative Dentistry, Srinakharinwirot University, Faculty of Dentistry, 114 Sukhumvit 23, Bangkok 10110, Thailand
3. Senior Lecturer/Hon Consultant in Restorative Dentistry, The University of Manchester, School of Dentistry, Higher Cambridge Street, Manchester M15 6FH, UK