1. University of Iowa, Carver College of Medicine, Department of Orthopedics and Rehabilitation, Iowa City, IA, USA
2. BronxCare Health System, Bronx, NY, USA
3. Department of Orthopedics and Rehabilitation, Paulista School of Medicine, Federal University of Sao Paulo, Brazil
4. Department of Orthopaedics, Tri-State Specialists, Sioux City, IA, USA
5. Department of Orthopaedics, Duke University Medical Center, Durham, NC, USA