1. Hospital for Special SurgeryHoward Hughes Medical Institute, and The Rockefeller University New York New York
2. Howard Hughes Medical Institute and The Rockefeller University New York New York
3. Hospital for Special Surgery New York New York
4. Rockefeller University Hospital New York New York
5. University of Massachusetts Memorial Medical Center Worcester
6. Johns Hopkins Medicine Baltimore Maryland
7. University of LeedsLeeds NIHR Biomedical Research Centre and Leeds Teaching Hospitals NHS Trust Leeds UK