1. Wallace H. Coulter Department of Biomedical Engineering; Georgia Institute of Technology and Emory University; Atlanta Georgia U.S.A.
2. Department of Biomedical Engineering; Peking University; Beijing China
3. Department of Biomedical Engineering; Virginia Commonwealth University; Richmond Virginia U.S.A.
4. Department of Periodontics; University of Texas Health Science Center at San Antonio; San Antonio Texas U.S.A.