1. North American Center for Limb Preservation, New Haven, Connecticut
2. Southern Arizona Veterans Affairs Medical Center, Surgery, Tucson, Arizona
3. Institute for Tissue Regeneration, Repair, and Rehabilitation, Bay Pines VA Healthcare System, Bay Pines, Florida, and the University of South Florida, Division of Plastic Surgery, Tampa, Florida
4. Valley Baptist Hospital, Brownsville, Texas
5. Saint Luke's Roosevelt Hospital, New York, New York