1. Research Unit for Plastic Surgery Odense University Hospital Odense Denmark
2. OPEN, Open Patient data Explorative Network Odense University Hospital Odense Denmark
3. Department of Surgery Brigham and Women's Hospital Boston Massachusetts USA
4. Department of Surgery OLVG West Amsterdam The Netherlands
5. Department of Pediatrics McMaster University Hamilton Ontario Canada
6. Department of Surgery St. Antonius Hospital Nieuwegein The Netherlands
7. Department of Plastic Surgery University of Southern Denmark Odense Denmark