1. Hand and Arm Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts
2. Department of Plastic, Reconstructive and Hand Surgery, Radboud University Medical Center, Nijmegen, the Netherlands
3. Department of Orthopaedics, University Medical Center Groningen/University of Groningen, Groningen, the Netherlands
4. Orthopaedic Oncology Service, Department of Orthopaedic Surgery, Massachusetts General Hospital, Boston, Massachusetts
5. Department of Orthopaedic Surgery, Radboud University Medical Center, Nijmegen, the Netherlands
6. Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Boston, Massachusetts
7. Harvard Medical School, Boston, Massachusetts