1. Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory Unversity, Atlanta, Georgia.
2. Parker H. Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia.
3. George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia.
4. School of Biological Sciences, Georgia Institute of Technology, Atlanta, Georgia.
5. Department of Orthopedics, Emory University, Atlanta, Georgia.
6. Atlanta Veteran's Affairs Medical Center, Decatur, Georgia.