1. Hand and Arm Center, Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Mass.
2. Department of Plastic, Reconstructive and Hand Surgery, Erasmus Medical Center, Erasmus University, Rotterdam, the Netherlands
3. Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Mass.
4. Division of Plastic and Reconstructive Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Mass.