1. Departments of Bioengineering, Rice University, Houston, Texas.
2. Statistics, Rice University, Houston, Texas.
3. School of Pharmacy, Hyogo University of Health Sciences, Chuo-ku, Kobe, Japan.
4. Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences, Kyoto University, Sakyo-ku, Kyoto, Japan.
5. Department of Periodontology and Biomaterials, Radboud University Nijmegen Medical Center, Nijmegen, The Netherlands.
6. Department of Oral and Maxillofacial Surgery, University of Texas Health Science Center at Houston, Houston, Texas.