| Affiliation: | 1. Division of Plastic, Reconstructive, Maxillofacial, and Oral Surgery and Department of Surgery, Duke University Medical Center, Durham, North Carolina;2. Division of Cardiothoracic Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina;3. Division of Plastic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania;4. Division of Cardiovascular Surgery and Department of Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania;5. Department of Orthopedic Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania |
