1. Plastic and Reconstructive Surgery Unit, Pisa, Italy
2. Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University School of Medicine, Shanghai, China
3. Maxillofacial Surgery Unit, Hospital of Florence, Florence, Italy
4. Division of Plastic, Reconstructive, Maxillofacial, and Oral Surgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina
5. Department of Orthopedic Surgery, University of Pennsylvania, Philadelphia, Pennsylvania