1. Department of Prosthetic Dental Science, College of Dentistry, Jazan University, Jazan, Saudi Arabia
2. Department of Prosthetic, College of Dentistry, King Khalid University, Abha, Saudi Arabia
3. General Practitioner, Altuwal General Hospital, Ministry of Health, Jazan, Saudi Arabia
4. General Practitioner, Private Clinic, Jazan, Saudi Arabia
5. School of Dental Sciences, University of Liverpool, Liverpool, United Kingdom