1. King Khalid University, College of Dentistry, Department of Periodontics and Community Dental Sciences, Abha, Kingdom of Saudi Arabia
2. H.S.R.M.S Dental College and Hospital, Department of Periodontics, Hingoli, India
3. Mahatma Gandhi Vidyamandir Dental College and Hospital, Department of Periodontics, Nasik, India
4. King Khalid University, College of Dentistry, Department of Prosthodontics, Abha, Kingdom of Saudi Arabia
5. King Khalid University, College of Dentistry, Department of Oral and Maxillofacial Surgery, Abha, Kingdom of Saudi Arabia
6. King Khalid University, College of Dentistry, Department of Restorative Dental Sciences, Abha, Kingdom of Saudi Arabia