1. Emory University School of Medicine, Emory University, Atlanta, GA, USA
2. Department of Orthopaedic Surgery, School of Medicine, Emory University, Atlanta, GA, USA
3. Department of Surgery, School of Medicine, Louisiana State University, New Orleans, LA, USA
4. Department of Surgery, School of Medicine, University of Alabama, Birmingham, AL, USA
5. Department of Surgery, School of Medicine, Emory University, Atlanta, GA, USA