1. Professor, Centre for Orobioengineering, Institute of Dentistry, Queen Mary University of London, London, United Kingdom.
2. Registrar, Centre for Orobioengineering, Institute of Dentistry, Queen Mary University of London, London, United Kingdom and Trainee Lecturer, Department of Orthodontics, Faculty of Dentistry, University of Kebangsaan, Malaysia.
3. Reader, Centre for Orobioengineering, Institute of Dentistry, Queen Mary University of London, London, United Kingdom.
4. Lecturer, Centre for Orobioengineering, Institute of Dentistry, Queen Mary University of London, London, United Kingdom.
5. Senior Lecturer, Department of Orthodontics and Dentofacial Orthopedics, University of Bern Medical Faculty Dental School, Bern, Switzerland, and Private Practice, Corfu, Greece.