1. Graduate Institute of Clinical Dentistry; School of Dentistry; National Taiwan University; Taipei Taiwan
2. School of Dentistry; National Taiwan University; Taipei Taiwan
3. Department of Dentistry; National Taiwan University Hospital; College of Medicine; Taipei Taiwan
4. Department of Oral and Maxillofacial Surgery; Division of Oral Pathology; School of Dentistry; University of Washington; Seattle WA USA
5. Graduate Institute of Oral Biology; School of Dentistry; National Taiwan University; Taipei Taiwan