1. Department of Biomedical Engineering, Tufts University, Medford, Massachusetts.
2. Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana.
3. Department of Chemical and Biological Engineering, Tufts University, Medford, Massachusetts.
4. Division of Plastic Surgery, Department of Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania.
5. Wake Forest Institute for Regenerative Medicine, Winston-Salem, North Carolina.
6. Department of Biomedical Engineering, Columbia University, New York, New York.