Affiliation: | 1. School of Dentistry, Chung Shan Medical University, Taichung, Taiwan;2. Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan;3. Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan;4. Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan;5. Division of Periodontics, Department of Dentistry, Chi Mei Medical Center, Tainan, Taiwan;6. Min-Hwei Junior College of Health Care Management, Tainan, Taiwan |