1. Department of Surgery Keck School of Medicine University of Southern California Los Angeles California USA
2. Professional Education and Research Institute Roanoke Virginia USA
3. Division of Plastic Surgery, Feinberg School of Medicine Northwestern University Chicago Illinois USA
4. Department of Surgery Drexel University School of Medicine Philadelphia Pennsylvania USA
5. Lower Extremity Institute for Research and Therapy Youngstown Ohio USA
6. Strategic Solutions, Inc. Bozeman Montana USA