1. Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, Republic of China.
2. Department of Periodontology, National Defense Medical Center and Tri-Service General Hospital, Taipei, Taiwan, Republic of China.
3. Institute of Cancer Biology and Drug Discovery, Taipei Medical University, Taipei, Taiwan, Republic of China.
4. Department of Periodontology, Cardinal Tien Hospital, New Taipei City, Taiwan, Republic of China.