1. Division of Oral Surgery, Tohoku University Graduate School of Dentistry, Sendai, Japan.
2. Division of Craniofacial Function Engineering, Tohoku University Graduate of Dentistry, Sendai, Japan.
3. Division of Bone Regenerative Engineering, Graduate School of Biomedical Engineering, Tohoku University, Sendai, Japan.
4. Nippon Meat Packers, Inc., Tsukuba, Ibaraki, Japan.
5. Research and Development Laboratory, NIPRO Corp., Kusatsu, Shiga, Japan.