1. Oral
and Craniofacial Health Sciences, School of Dentistry, University of North Carolina, Chapel Hill, North Carolina 27599, United States
2. Nippi Research Institute of Biomatrix, Ibaraki 302-0017, Japan
3. Section
on Heritable Disorders of Bone and Extracellular Matrix, NICHD, National Institutes of Health, Bethesda, Maryland 20892, United States
4. Division
of Bio-Prosthodontics, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8514, Japan