1. Postgraduate student, Oral Medicine Unit; School of Dental Sciences, Universiti Sains Malaysia
2. Senior Registrar, Department of Oral Medicine, Dental Section, Akhtar Saeed Medical and Dental College, Lahore, Pakistan
3. Consultant Oral and Maxillofacial Surgeon, Prince Mutaib Bin Abdul Aziz Hospital, Sakakah, Al-Jouf, Saudi Arabia
4. Conservative Dentistry Unit, School of Dental Sciences, Universiti Sains Malaysia
5. Conservative Dentistry Unit, School of Dental Sciences, Universiti Sains Malaysia, Kota bharu, Kelantan, Malaysia