1. National Institute of Dental and Craniofacial Research, Bethesda, Maryland.
2. School of Dentistry, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina.
3. Department of Pre-Clinical and Applied Animal Sciences, Faculty of Veterinary Science, Mahidol University, Phutthamonthon, Thailand.
4. College of Veterinary Medicine, North Carolina State University, Raleigh, North Carolina.
5. Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota.
6. Material Sciences and Engineering, North Carolina State University, Raleigh, North Carolina.