1. Department of Surgery, Duke University School of Medicine, Durham, North Carolina
2. Division of Plastic and Reconstructive Surgery, Department of Surgery, Mayo Clinic, Rochester, Minnesota
3. Division of Plastic and Maxillofacial Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
4. Department of Medicine, University of California San Diego, La Jolla, California
5. Department of Plastic Surgery, University of Virginia, Charlottesville, Virginia