1. Division of Oral and Maxillofacial Surgery, Faculty of Dentistry, Thammasat University, Pathum Thani, Thailand
2. Department of Oral Biomedical Sciences, Research Group of Chronic Inflammatory Oral Diseases and Systemic Diseases Associated with Oral Health, Faculty of Dentistry, Khon Kaen University, Khon Kaen, Thailand
3. Oral and Maxillofacial Surgery Clinic, Udon Thani Hospital, Udon Thani, Thailand