1. Laboratory for Comparative Orthopaedic Research, College of Veterinary Medicine, Michigan State University, East Lansing, Michigan.
2. Comparative Orthopaedic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, Missouri.
3. The Orthopedic Clinic, Phoenix, Arizona.
4. Small Ruminant Comparative Orthopaedic Research Laboratory, Veterinary Medical Center, Colorado State University, Fort Collins, Colorado.