1. Cooper Medical School of Rowan University, Camden, NJ, USA
2. Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA, USA
3. Department of Orthopaedic Surgery, George Washington School of Medicine & Health Sciences, Washington, DC, USA
4. Adult Reconstruction & Joint Replacement, Hospital for Special Surgery, New York, NY, USA
5. Johns Hopkins Department of Orthopaedic Surgery, Adult Reconstruction Division, Columbia, MD, USA