1. Department of Dentistry, School of Dentistry National Taiwan University Taipei City Taiwan
2. Graduate Institute of Clinical Dentistry, School of Dentistry National Taiwan University Taipei City Taiwan
3. Department of Oral and Maxillofacial Surgery National Taiwan University Hospital Taipei City Taiwan
4. Department of Biologic and Materials Sciences University of Michigan School of Dentistry Ann Arbor Michigan
5. Department of Pediatric Dentistry National Taiwan University Children’s Hospital Taipei City Taiwan