1. Department of Periodontics and Community Dentistry College of Dentistry King Saud University Riyadh Saudi Arabia
2. Department of Oral Medicine and Radiology Sharavathi Dental College and Hospital Shivamogga India
3. Department of Oral Medicine and Radiology Faculty of Dentistry Ministry of Health Levy Mwanawasa Medical University (LMMU) Lusaka Zambia