1. Department of Orthopaedic Surgery; School of Medicine; Musculoskeletal Research Center; Washington University; 660 S. Euclid, Campus Box 8233 Saint Louis Missouri 63110
2. Shriners Hospitals for Children-St. Louis; St. Louis Missouri
3. Department of Cell Biology & Physiology; School of Medicine; Washington University; Saint Louis Missouri
4. Program in Physical Therapy; School of Medicine; Washington University; Saint Louis Missouri
5. School of Veterinary Medicine; Louisiana State University; Baton Rouge Louisiana
6. College of Veterinary Medicine; Cornell University; Ithaca New York