1. Department of Orthopaedic Surgery, Landstuhl Regional Medical Center, Landstuhl, Germany
2. Department of Orthopaedic Surgery, Brigham and Women’s Hospital, Boston, MA, USA
3. Department of Orthopedic Surgery, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA
4. Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, USA