1. Institute of Oral Biology; School of Dentistry; National Yang-Ming University; Taipei Taiwan
2. Department of Pathology; Tri-Service General Hospital; National Defense Medical Center; Taipei Taiwan
3. Division of Histological and Clinical Pathology; Hualien Armed Forced General Hospital; Hualien Taiwan
4. Department of Dentistry; Shuang-Ho Hospital; Taipei Medical University; Taipei Taiwan
5. Department of Radiation Oncology; Tri-Service General Hospital; National Defense Medical Center; Taipei Taiwan