1. Plastic Reconstructive and Aesthetic Surgery Unit, Villa Salaria Clinic, Rome, Italy
2. Reconstructive Microsurgery Unit, Hospital of Florence, Florence, Italy
3. Department of Plastic and Reconstructive Surgery, Marche Polytechnic University Medical School, University Hospital of Ancona, Ancona, Italy
4. Department of Orthopedic Surgery, Hospital of University of Pennsylvania, Philadelphia, Pennsylvania
5. Plastic and Reconstructive Surgery Unit, Campus Bio-Medico University, Rome, Italy
6. Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai JiaoTong University, School of Medicine, Shanghai, China