1. Faculty of Dentistry, Department of Periodontology, University of Malaya, Kuala Lumpur, Malaysia.
2. General Practitioner, Ministry of Health, Riyadh, Saudi Arabia.
3. Faculty of Dentistry, Department of Paediatric Dentistry, Prince Philip Dental Hospital, University of Hong Kong, Hong Kong.
4. Department of Preventive Dental Sciences, College of Dentistry, King Faisal University, Al-Ahsa, Saudi Arabia.
5. Department of Preventive Dental Sciences, College of Dentistry, Dar Al Uloom University, Riyadh, Saudi Arabia.
6. Department of Prosthetic Dental Sciences, College of Dentistry, King Saud University, Riyadh, Saudi Arabia.
7. Advanced General Dentistry. Division of General Dentistry, Eastman Institute for Oral Health, University of Rochester, New York.