1. Department of Orthopaedic Surgery, Wake Forest University Health Sciences, Wake Forest University School of Medicine, Medical Center Boulevard, Winston-Salem, NC 27157
2. Virginia Tech - Wake Forest University School of Biomedical Engineering and Sciences, Blacksburg, VA 24061 e-mail:
3. School of Biomedical Engineering and Sciences, Wake Forest University School of Medicine, Suite 120, 575 N. Patterson Avenue, Winston-Salem, NC 27101
4. The Ohio State University, Room #279, 1645 Neil Avenue, Columbus, OH 43210 e-mail: