1. Department of Oral Medicine and Periodontology, Faculty of Dental Sciences University of Peradeniya Peradeniya Sri Lanka
2. Centre for Research in Oral Cancer, Faculty of Dental Sciences University of Peradeniya Peradeniya Sri Lanka
3. Department of Basic Sciences, Faculty of Dental Sciences University of Peradeniya Peradeniya Sri Lanka
4. Department of Oral Pathology, Faculty of Dental Sciences University of Peradeniya Peradeniya Sri Lanka
5. Faculty of Medicine University of Peradeniya Peradeniya Sri Lanka
6. Department of Oral and Maxillofacial Clinical Sciences, Faculty of Dentistry University of Malaya Kuala Lumpur Malaysia