1. Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, Georgia.
2. Department of Biomedical Engineering, Emory University, Atlanta, Georgia.
3. Department of Biomedical Engineering, Peking University, Beijing, China.
4. Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia.
5. Department of Periodontics, University of Texas Health Science Center at San Antonio, San Antonio, Texas.