1. Department of Plastic, Reconstructive and Hand Surgery, Center for Severe Burn Injuries, Paracelsus Medical University, Klinikum Nürnberg, Nuremberg, Germany
2. Department of Health Management, Friedrich Friedrich Alexander University Erlangen-Nuernberg (FAU), Erlangen, Germany
3. Department of General and Visceral Surgery, Hospital Martha-Maria, Nuremberg, Germany.