1. College of Medicine, Medical University of South Carolina, Charleston, South Carolina
2. Carle Illinois College of Medicine, Urbana, Illinois
3. Department of Orthopaedic Surgery and Rehabilitation Services, University of Chicago, Chicago, Illinois
4. University of North Carolina, Gillings School of Global Public Health, Charleston, South Carolina
5. Department of Orthopaedic Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio