1. Department of Orthopaedic Surgery, Albert Einstein College of Medicine/Montefiore Medical Center, New York, NY, USA.
2. Department of Orthopaedic Surgery, Banner Estrella Medical Center, Phoenix, AZ, USA.
3. Department of Orthopaedic Surgery, University of Virginia School of Medicine, Charlottesville, VA, USA.
4. Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC, USA.