1. Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts, USA.
2. Kaplan Joint Center, Newton-Wellesley Hospital, Newton, Massachusetts, USA.
3. Department of Orthopaedic Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
4. Department of Infectious Disease, New England Baptist Hospital, Dedham, Massachusetts, USA.
5. Department of Orthopaedic Surgery, New England Baptist Hospital, Dedham, Massachusetts, USA.