1. Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio.
2. Department of Pathology, The Wexner Medical Center at The Ohio State University, Columbus, Ohio.
3. Department of Surgery, The Wexner Medical Center at The Ohio State University, Columbus, Ohio.
4. Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio.
5. Research Department, The Shriners Hospitals for Children, Cincinnati, Ohio.