| Affiliation: | 1. Department of Orthopaedic Surgery, Boston University School of Medicine, Boston, MA, USA;2. Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI, USA;3. Department of Orthopaedic Surgery, University of California San Francisco School of Medicine, San Francisco, CA, USA;4. Department of Epidemiology and Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI, USA;5. Department of Orthopaedic Surgery, Medical University of South Carolina, Charleston, SC, USA;6. Department of Orthopaedic Surgery, New England Baptist Hospital, Waltham, MA, USA;1. Harvard Medical School, Boston, MA 02115 (NLP);2. VA Boston Healthcare System, Brockton, MA 02301 (RJM) |
