1. McKay Orthopaedic Research Laboratory, Department of Orthopaedic Surgery University of Pennsylvania Philadelphia Pennsylvania
2. Marion duPont Scott Equine Medical Center, Department of Large Animal Clinical Sciences Virginia Tech Leesburg Virginia
3. The Center for Musculoskeletal Research, Department of Biomedical Engineering University of Rochester Rochester New York
4. Flexcell International Corporation Burlington North Carolina
5. Joint Department of Biomedical Engineering University of North Carolina at Chapel Hill and North Carolina State University Chapel Hill North Carolina
6. Department of Biomedical Engineering University of Cincinnati Cincinnati Ohio