1. Life Science Laboratory, Nitta Gelatin Inc., Osaka 581-0024, Japan
2. Core Laboratory Section, Tzu-Chi Hospital, Xindian Dist., New Taipei City 231,
Taiwan
3. Graduate Institute
of Biomedical
Materials and Tissue Engineering, College of Oral Medicine, Taipei Medical University, Taipei 110, Taiwan
4. Department of Dentistry, Taipei Medical University-Shuang-Ho Hospital, Taipei
235, Taiwan