1. Department of Orthopaedics, The Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, Rhode Island, USA.
2. Department of Radiology, Brigham and Women’s Hospital/Harvard University, Boston Massachusetts, USA.
3. Department of Medical Biostatistics, University of Vermont, Burlington, Vermont, USA.
4. Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio, USA.