1. Department of Plastic Surgery, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain
2. Department of Plastic Surgery, Tokyo University Hospital, Tokyo, Japan
3. Department of Plastic Surgery, Queen Victoria Hospital, East Grinstead, United Kingdom
4. Department of Plastic Surgery, Helsinki University Central Hospital, Helsinky, Finland
5. Department of Plastic Surgery, Gent Universitu Hospital, Gent, Belgium
6. Department of Plastic Surgery, Ondokuz Mayis University Medical School, Samsun, Turkey
7. Department of Plastic surgery, Hospital Europeen Georges Pompidou of Paris, Paris, France
8. Department of Plastic Surgery, European Institute of Oncology Milano, Milano, Italy