1. Division of Periodontology; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
2. Division of Oral Pathology & Maxillofacial Radiology; Kaohsiung Medical University Hospital; Kaohsiung Taiwan
3. School of Dentistry; College of Dental Medicine; Kaohsiung Medical University; Kaohsiung Taiwan
4. Oral & Maxillofacial Imaging Center; College of Dental Medicine; Kaohsiung Medical University; Kaohsiung Taiwan