1. Department of Plastic and Reconstructive Surgery; China Medical University Hospital; Taichung 40447 Taiwan Republic of China
2. Department of Plastic and Reconstructive Surgery; “Sapienza” University of Rome; Viale del Policlinico 151 00161 Rome Italy
3. Department of Plastic and Reconstructive Surgery; University of Sassari; Viale San Pietro 43b 07100 Sassari Italy