1. Prosthodontic Department, College of Dentistry, Jouf University
2. Orthodontic Department, College of Dentistry, Jouf University
3. Prosthodontic Department, School of Dental Sciences, Universiti Sains Malaysia
4. Periodontics Department, College of Dentistry, Jouf University
5. Oral Basic and Clinical Sciences Department, College of Dentistry, Taibah University
6. Department of Oral Pathology, School of Dentistry, Aichi Gakuin University