1. Department of Orthopaedic Surgery, Northwestern University, Chicago, Illinois, USA
2. Center for Shoulder, Elbow and Sports Medicine, Columbia University Medical Center, New York, New York, USA
3. Department of Orthopaedic Surgery, University of California–Los Angeles, Los Angeles, California, USA
4. Quintiles, Durham, North Carolina, USA
5. Department of Orthopaedic Surgery, NorthShore University, Chicago, Illinois, USA