1. Department of Oral Pathology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
2. Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
3. Department of Oral Diagnostic Sciences, Faculty of Dentistry, Prince of Songkla University, Songkhla, Thailand
4. Department of Oral Biomedical Sciences, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
5. Department of Oral Biology and Oral Diagnostic Sciences, Chiang Mai University, Chiang Mai, Thailand
6. Department of Oral Diagnostic Sciences, College of Dental Medicine, Rangsit University, Pathumtani, Thailand