1. Department of Periodontology; National Defense Medical Center; Research Institute of Dental Sciences; School of Dentistry; Tri-Service General Hospital; Taipei Taiwan
2. Program for Graduate Institute of Cancer Biology and Drug Discovery; College of Medical Science and Technology; Taipei Medical University; Taipei Taiwan
3. Department of Dental Hygiene; China Medical University; Taichung Taiwan
4. Department of Oral Medicine, Infection and Immunity; Harvard School of Dental Medicine; Boston MA USA