1. Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Cornell Medicine, New York City, NY
2. Center for Musculoskeletal Surgery, Charité—Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität Zu Berlin, Berlin
3. Department of Orthopaedic Surgery, University of Ulm, Ulm, Germany
4. Biostatistics Core, Hospital for Special Surgery, New York City, NY
5. Department of Orthopaedic Surgery, School of Medicine, Showa University Hospital, Tokyo, Japan
6. Hospital for Special Surgery, New York City, NY
7. III Normal Anatomy Department, School of Medicine, University of Buenos Aires
8. Intraoperative Monitoring, Department of Pediatric Neurology, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
9. Weill Cornell Medical College, New York, NY