1. Institute of Oral Sciences, Chung Shan Medical University, Taichung 40201, Taiwan
2. Department of Psychology, Chung Shan Medical University, Taichung 40201, Taiwan
3. Department of Early Childhood Development and Education, Chaoyang University of Technology, Taichung 41349, Taiwan
4. Department of Dentistry, Chung Shan Medical University Hospital, Taichung 40201, Taiwan